{"id":3947,"date":"2025-12-10T10:49:06","date_gmt":"2025-12-10T09:49:06","guid":{"rendered":"https:\/\/www.swissrocketman.fr\/Wordpress\/?p=3947"},"modified":"2026-02-07T12:31:47","modified_gmt":"2026-02-07T11:31:47","slug":"diode-260w-pour-pompage-de-laser-a-fibre","status":"publish","type":"post","link":"https:\/\/www.swissrocketman.fr\/Wordpress\/?p=3947","title":{"rendered":"Diode 260W pour pompage de laser \u00e0 fibre"},"content":{"rendered":"<div class=\"flex_column av_one_full  flex_column_div av-zero-column-padding first  avia-builder-el-0  el_before_av_one_full  avia-builder-el-first  \" style='border-radius:0px; '><div  class='avia-video avia-video-16-9   av-lazyload-immediate  av-lazyload-video-embed  '   itemprop=\"video\" itemtype=\"https:\/\/schema.org\/VideoObject\"  data-original_url='https:\/\/youtu.be\/F0sJTmdsKPM' ><script type='text\/html' class='av-video-tmpl'><div class='avia-iframe-wrap'><iframe loading=\"lazy\" title=\"laser diode 260w sur lame de rasoir\" width=\"1500\" height=\"844\" src=\"https:\/\/www.youtube.com\/embed\/F0sJTmdsKPM?feature=oembed&autoplay=0&loop=0&controls=1&mute=0\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div><\/script><div class='av-click-to-play-overlay'><div class=\"avia_playpause_icon\"><\/div><\/div><\/div><\/div><div class=\"flex_column av_one_full  flex_column_div av-zero-column-padding first  avia-builder-el-2  el_after_av_one_full  el_before_av_one_half  column-top-margin\" style='border-radius:0px; '><div  class='avia-image-container  av-styling-    avia-builder-el-3  avia-builder-el-no-sibling  avia-align-center '  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\"  ><div class='avia-image-container-inner'><div class='avia-image-overlay-wrap'><img decoding=\"async\" class='wp-image-4307 avia-img-lazy-loading-not-4307 avia_image' src=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20260130_152525-scaled.jpg\" alt='' title='20260130_152525' height=\"1152\" width=\"2560\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20260130_152525-scaled.jpg 2560w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20260130_152525-300x135.jpg 300w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20260130_152525-1030x464.jpg 1030w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20260130_152525-768x346.jpg 768w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20260130_152525-1536x691.jpg 1536w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20260130_152525-2048x922.jpg 2048w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20260130_152525-1500x675.jpg 1500w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20260130_152525-705x317.jpg 705w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><\/div><\/div><\/div><\/div><\/p>\n<div class=\"flex_column av_one_half  flex_column_div av-zero-column-padding first  avia-builder-el-4  el_after_av_one_full  el_before_av_one_half  column-top-margin\" style='border-radius:0px; '><div  class='avia-video avia-video-16-9   av-lazyload-immediate  av-lazyload-video-embed  '   itemprop=\"video\" itemtype=\"https:\/\/schema.org\/VideoObject\"  data-original_url='https:\/\/youtube.com\/shorts\/OC82bgNpVEg?' ><script type='text\/html' class='av-video-tmpl'><div class='avia-iframe-wrap'><iframe loading=\"lazy\" title=\"Diode laser fibr\u00e9e de 260W test\u00e9e \u00e0 20W\" width=\"563\" height=\"1000\" src=\"https:\/\/www.youtube.com\/embed\/OC82bgNpVEg?feature=oembed&autoplay=0&loop=0&controls=1&mute=0\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div><\/script><div class='av-click-to-play-overlay'><div class=\"avia_playpause_icon\"><\/div><\/div><\/div><\/div>\n<div class=\"flex_column av_one_half  flex_column_div av-zero-column-padding   avia-builder-el-6  el_after_av_one_half  el_before_av_one_full  column-top-margin\" style='border-radius:0px; '><div  class='avia-image-container  av-styling-    avia-builder-el-7  avia-builder-el-no-sibling  avia-align-center '  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\"  ><div class='avia-image-container-inner'><div class='avia-image-overlay-wrap'><img decoding=\"async\" class='wp-image-4311 avia-img-lazy-loading-not-4311 avia_image' src=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/Capture-decran-2026-01-31-092657.png\" alt='' title='Capture d&#039;\u00e9cran 2026-01-31 092657' height=\"763\" width=\"492\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/Capture-decran-2026-01-31-092657.png 492w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/Capture-decran-2026-01-31-092657-193x300.png 193w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/Capture-decran-2026-01-31-092657-455x705.png 455w\" sizes=\"(max-width: 492px) 100vw, 492px\" \/><\/div><\/div><\/div><\/div>\n<div class=\"flex_column av_one_full  flex_column_div av-zero-column-padding first  avia-builder-el-8  el_after_av_one_half  el_before_av_one_full  column-top-margin\" style='border-radius:0px; '><\/div>\n<div class=\"flex_column av_one_full  flex_column_div av-zero-column-padding first  avia-builder-el-9  el_after_av_one_full  el_before_av_one_full  column-top-margin\" style='border-radius:0px; '><section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><p>Cette diode de 260W se compose de 18 diodes de 14.5 W chacune .Voici une explication claire et d\u00e9taill\u00e9e du fonctionnement d\u2019un module de\u00a0<strong data-start=\"75\" data-end=\"107\">pompe laser 915 nm de ~260 W<\/strong>, comme celui que montre ta photo.<br data-start=\"141\" data-end=\"144\" \/>(Il s\u2019agit bien d\u2019un module multi-diodes haute puissance utilis\u00e9 pour pomper un cristal laser, typiquement pour un laser fibre ou un laser solide type Nd:YAG.)<\/p>\n<p data-start=\"426\" data-end=\"668\">Ce sont des puces semi-conductrices allong\u00e9es comportant chacune\u00a0<strong data-start=\"491\" data-end=\"543\">plusieurs dizaines \u00e0 centaines d\u2019\u00e9metteurs laser<\/strong>\u00a0align\u00e9s.<br data-start=\"552\" data-end=\"555\" \/>Chaque barre d\u00e9livre typiquement\u00a0<strong data-start=\"588\" data-end=\"601\">10 \u00e0 20 W<\/strong>, d\u2019o\u00f9 l\u2019ordre de grandeur total \u2248 18 \u00d7 15 W =\u00a0<strong data-start=\"648\" data-end=\"667\">~270 W optiques<\/strong>.<\/p>\n<h3 data-start=\"670\" data-end=\"723\"><strong data-start=\"677\" data-end=\"721\">Une optique de couplage \/ homogenisation<\/strong><\/h3>\n<p data-start=\"724\" data-end=\"852\">Les petites pi\u00e8ces blanches l\u00e9g\u00e8rement inclin\u00e9es sont des\u00a0<strong data-start=\"782\" data-end=\"800\">microlentilles<\/strong>\u00a0(souvent faites de verre ou c\u00e9ramique), servant \u00e0 :<\/p>\n<ul data-start=\"854\" data-end=\"1115\">\n<li data-start=\"854\" data-end=\"928\">\n<p data-start=\"856\" data-end=\"928\">Collimer le faisceau en direction rapide (fast axis collimation \u2013 FAC)<\/p>\n<\/li>\n<li data-start=\"929\" data-end=\"998\">\n<p data-start=\"931\" data-end=\"998\">Collimer ensuite la direction lente (slow axis collimation \u2013 SAC)<\/p>\n<\/li>\n<li data-start=\"999\" data-end=\"1115\">\n<p data-start=\"1001\" data-end=\"1115\">Superposer les faisceaux des 18 diodes pour obtenir un seul faisceau coh\u00e9rent spatialement<\/p>\n<\/li>\n<li data-start=\"999\" data-end=\"1115\">\n<p data-start=\"1001\" data-end=\"1115\">(mais\u00a0<strong data-start=\"1098\" data-end=\"1105\">pas<\/strong>\u00a0en phase)<\/p>\n<\/li>\n<li data-start=\"999\" data-end=\"1115\">\n<h3 data-start=\"1117\" data-end=\"1174\"><strong data-start=\"1124\" data-end=\"1172\">Un cristal ou une fibre collectrice \u00e0 droite<\/strong><\/h3>\n<p data-start=\"1175\" data-end=\"1234\">La zone violette tr\u00e8s lumineuse \u00e0 droite est l\u2019endroit o\u00f9 :<\/p>\n<ul data-start=\"1236\" data-end=\"1430\">\n<li data-start=\"1236\" data-end=\"1296\">\n<p data-start=\"1238\" data-end=\"1296\">Tous les faisceaux collimat\u00e9s sont\u00a0<strong data-start=\"1273\" data-end=\"1294\">inject\u00e9s ensemble<\/strong><\/p>\n<\/li>\n<li data-start=\"1297\" data-end=\"1363\">\n<p data-start=\"1299\" data-end=\"1363\">Souvent dans une fibre multimode de\u00a0<strong data-start=\"1335\" data-end=\"1349\">200\u2013400 \u03bcm<\/strong>\u00a0de diam\u00e8tre<\/p>\n<\/li>\n<li data-start=\"1364\" data-end=\"1430\">\n<p data-start=\"1366\" data-end=\"1430\">Ou dans une zone d\u2019injection d\u2019un cristal (Nd:YAG, Yb:YAG, etc.)<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1432\" data-end=\"1560\">La lumi\u00e8re violette visible n\u2019est pas le 915 nm (invisible), mais des\u00a0<strong data-start=\"1502\" data-end=\"1542\">fluorescences \/ r\u00e9flexions parasites<\/strong>\u00a0dans l\u2019UV proche.<\/p>\n<\/li>\n<\/ul>\n<\/div><\/section><\/div>\n<div class=\"flex_column av_one_full  flex_column_div av-zero-column-padding first  avia-builder-el-11  el_after_av_one_full  el_before_av_one_full  column-top-margin\" style='border-radius:0px; '><div  class='avia-image-container  av-styling-    avia-builder-el-12  avia-builder-el-no-sibling  avia-align-center '  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\"  ><div class='avia-image-container-inner'><div class='avia-image-overlay-wrap'><img decoding=\"async\" class='wp-image-3926 avia-img-lazy-loading-not-3926 avia_image' src=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/20251130_122809-scaled.jpg\" alt='' title='20251130_122809' height=\"1095\" width=\"2560\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/20251130_122809-scaled.jpg 2560w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/20251130_122809-300x128.jpg 300w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/20251130_122809-1030x441.jpg 1030w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/20251130_122809-768x329.jpg 768w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/20251130_122809-1536x657.jpg 1536w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/20251130_122809-2048x876.jpg 2048w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/20251130_122809-1500x642.jpg 1500w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/20251130_122809-705x302.jpg 705w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><\/div><\/div><\/div><\/div>\n<div class=\"flex_column av_one_full  flex_column_div av-zero-column-padding first  avia-builder-el-13  el_after_av_one_full  el_before_av_one_full  column-top-margin\" style='border-radius:0px; '><section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><h3 data-start=\"1567\" data-end=\"1630\"><strong data-start=\"1571\" data-end=\"1630\">2. Comment fonctionne une diode laser de pompe 915 nm ?<\/strong><\/h3>\n<p data-start=\"1632\" data-end=\"1722\">Une diode laser fonctionne comme une LED \u00ab\u00a0organis\u00e9e\u00a0\u00bb pour cr\u00e9er un faisceau tr\u00e8s intense :<\/p>\n<ol data-start=\"1724\" data-end=\"1985\">\n<li data-start=\"1724\" data-end=\"1803\">\n<p data-start=\"1727\" data-end=\"1803\"><strong data-start=\"1727\" data-end=\"1751\">Injection de courant<\/strong>\u00a0dans un semiconducteur (g\u00e9n\u00e9ralement GaAs \/ AlGaAs)<\/p>\n<\/li>\n<li data-start=\"1804\" data-end=\"1885\">\n<p data-start=\"1807\" data-end=\"1885\">Accumulation de photons dans une\u00a0<strong data-start=\"1840\" data-end=\"1860\">cavit\u00e9 r\u00e9sonante<\/strong>\u00a0\u00e0 l\u2019int\u00e9rieur de la puce<\/p>\n<\/li>\n<li data-start=\"1886\" data-end=\"1926\">\n<p data-start=\"1889\" data-end=\"1926\">Amplification par \u00e9mission stimul\u00e9e<\/p>\n<\/li>\n<li data-start=\"1927\" data-end=\"1985\">\n<p data-start=\"1930\" data-end=\"1985\">Sortie d\u2019un faisceau quasi-monochromatique \u00e0\u00a0<strong data-start=\"1975\" data-end=\"1985\">915 nm<\/strong><\/p>\n<\/li>\n<\/ol>\n<p data-start=\"1987\" data-end=\"2126\">\u26a0\ufe0f Ces diodes ne sont pas faites pour faire un faisceau propre :<br data-start=\"2051\" data-end=\"2054\" \/>elles servent \u00e0 d\u00e9livrer\u00a0<strong data-start=\"2079\" data-end=\"2104\">beaucoup de puissance<\/strong>, pas \u00e0 \u00eatre pr\u00e9cises.<\/p>\n<h3 data-start=\"1987\" data-end=\"2126\"><strong data-start=\"2138\" data-end=\"2194\">3. Pourquoi utiliser 18 diodes au lieu d\u2019une seule ?<\/strong><\/h3>\n<p data-start=\"2196\" data-end=\"2297\">Parce qu\u2019une diode laser ne peut pas d\u00e9passer quelques dizaines de watts.<br data-start=\"2269\" data-end=\"2272\" \/>Donc pour obtenir 260 W :<\/p>\n<ul data-start=\"2299\" data-end=\"2441\">\n<li data-start=\"2299\" data-end=\"2333\">\n<p data-start=\"2301\" data-end=\"2333\">On\u00a0<strong data-start=\"2304\" data-end=\"2314\">empile<\/strong>\u00a0plusieurs barres<\/p>\n<\/li>\n<li data-start=\"2334\" data-end=\"2382\">\n<p data-start=\"2336\" data-end=\"2382\">On\u00a0<strong data-start=\"2339\" data-end=\"2352\">superpose<\/strong>\u00a0leurs faisceaux via une optique<\/p>\n<\/li>\n<li data-start=\"2383\" data-end=\"2441\">\n<p data-start=\"2385\" data-end=\"2441\">On injecte le tout dans la m\u00eame fibre ou le m\u00eame cristal<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2443\" data-end=\"2495\">C\u2019est un principe de\u00a0<strong data-start=\"2464\" data-end=\"2482\">beam combining<\/strong>\u00a0g\u00e9om\u00e9trique.<\/p>\n<h3 data-start=\"2443\" data-end=\"2495\"><strong data-start=\"2507\" data-end=\"2531\">4. Pourquoi 915 nm ?<\/strong><\/h3>\n<p data-start=\"2533\" data-end=\"2621\">Parce que c\u2019est une longueur d\u2019onde qui pompe tr\u00e8s efficacement certains milieux laser :<\/p>\n<ul data-start=\"2623\" data-end=\"2804\">\n<li data-start=\"2623\" data-end=\"2701\">\n<p data-start=\"2625\" data-end=\"2701\">Nd:YAG \u2192 transition d\u2019absorption \u00e0 808 nm\u00a0<em data-start=\"2667\" data-end=\"2671\">et<\/em>\u00a0bande large vers 885\u2013915 nm<\/p>\n<\/li>\n<li data-start=\"2702\" data-end=\"2747\">\n<p data-start=\"2704\" data-end=\"2747\">Yb:YAG \u2192 bande large autour de 915\u2013940 nm<\/p>\n<\/li>\n<li data-start=\"2748\" data-end=\"2804\">\n<p data-start=\"2750\" data-end=\"2804\">Silica dop\u00e9e ytterbium \u2192 tr\u00e8s efficace vers 915\u2013976 nm<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2806\" data-end=\"2863\">915 nm chauffe moins que 808 nm \u2192 meilleure dur\u00e9e de vie.<\/p>\n<h3 data-start=\"2806\" data-end=\"2863\"><strong data-start=\"2875\" data-end=\"2897\">5. Refroidissement<\/strong><\/h3>\n<p data-start=\"2899\" data-end=\"2948\">Le bloc dor\u00e9 est en\u00a0<strong data-start=\"2931\" data-end=\"2941\">cuivre<\/strong>, car :<\/p>\n<ul data-start=\"2950\" data-end=\"3097\">\n<li data-start=\"2950\" data-end=\"2985\">\n<p data-start=\"2952\" data-end=\"2985\">Il conduit tr\u00e8s bien la chaleur<\/p>\n<\/li>\n<li data-start=\"2986\" data-end=\"3040\">\n<p data-start=\"2988\" data-end=\"3040\">Il est g\u00e9n\u00e9ralement refroidi par circulation d\u2019eau<\/p>\n<\/li>\n<li data-start=\"3041\" data-end=\"3097\">\n<p data-start=\"3043\" data-end=\"3097\">Les diodes doivent rester \u00e0 temp\u00e9rature stable \u00b10.1 \u00b0C<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3099\" data-end=\"3131\">Sinon la longueur d\u2019onde d\u00e9rive.<\/p>\n<h3 data-start=\"3099\" data-end=\"3131\"><strong data-start=\"3143\" data-end=\"3163\">6. R\u00e9sum\u00e9 simple<\/strong><\/h3>\n<p data-start=\"3165\" data-end=\"3177\">Le module :<\/p>\n<ul data-start=\"3179\" data-end=\"3441\">\n<li data-start=\"3179\" data-end=\"3238\">\n<p data-start=\"3181\" data-end=\"3238\">contient\u00a0<strong data-start=\"3190\" data-end=\"3228\">18 barres laser de 15 watts<\/strong>\u00a0chacune<\/p>\n<\/li>\n<li data-start=\"3239\" data-end=\"3280\">\n<p data-start=\"3241\" data-end=\"3280\">combine tous les faisceaux en un seul<\/p>\n<\/li>\n<li data-start=\"3281\" data-end=\"3347\">\n<p data-start=\"3283\" data-end=\"3347\">utilise des\u00a0<strong data-start=\"3295\" data-end=\"3313\">microlentilles<\/strong>\u00a0pour collimater et homog\u00e9n\u00e9iser<\/p>\n<\/li>\n<li data-start=\"3348\" data-end=\"3387\">\n<p data-start=\"3350\" data-end=\"3387\">\u00e9met environ\u00a0<strong data-start=\"3363\" data-end=\"3385\">260 watts \u00e0 915 nm<\/strong><\/p>\n<\/li>\n<li data-start=\"3388\" data-end=\"3441\">\n<p data-start=\"3390\" data-end=\"3441\">sert \u00e0\u00a0<strong data-start=\"3397\" data-end=\"3441\">pomper un laser solide ou un laser fibre<\/strong><\/p>\n<\/li>\n<\/ul>\n<\/div><\/section><\/div>\n<div class=\"flex_column av_one_full  flex_column_div av-zero-column-padding first  avia-builder-el-15  el_after_av_one_full  el_before_av_one_full  column-top-margin\" style='border-radius:0px; '><div  class='avia-image-container  av-styling-    avia-builder-el-16  avia-builder-el-no-sibling  avia-align-center '  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\"  ><div class='avia-image-container-inner'><div class='avia-image-overlay-wrap'><img decoding=\"async\" class='wp-image-3925 avia-img-lazy-loading-not-3925 avia_image' src=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/20251130_121400.jpg\" alt='' title='20251130_121400' height=\"1660\" width=\"2088\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/20251130_121400.jpg 2088w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/20251130_121400-300x239.jpg 300w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/20251130_121400-1030x819.jpg 1030w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/20251130_121400-768x611.jpg 768w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/20251130_121400-1536x1221.jpg 1536w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/20251130_121400-2048x1628.jpg 2048w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/20251130_121400-1500x1193.jpg 1500w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/20251130_121400-705x560.jpg 705w\" sizes=\"(max-width: 2088px) 100vw, 2088px\" \/><\/div><\/div><\/div><\/div>\n<div class=\"flex_column av_one_full  flex_column_div av-zero-column-padding first  avia-builder-el-17  el_after_av_one_full  el_before_av_one_full  column-top-margin\" style='border-radius:0px; '><section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><h3><strong data-start=\"277\" data-end=\"347\">1. Chaque barre laser g\u00e9n\u00e8re un faisceau \u201cmoche\u201d et tr\u00e8s divergent<\/strong><\/h3>\n<p data-start=\"349\" data-end=\"374\">Une barre laser poss\u00e8de :<\/p>\n<ul data-start=\"376\" data-end=\"506\">\n<li data-start=\"376\" data-end=\"439\">\n<p data-start=\"378\" data-end=\"439\">une\u00a0<strong data-start=\"382\" data-end=\"395\">fast axis<\/strong>\u00a0(axe rapide) \u2192 divergence \u00e9norme, ~30\u201350\u00b0<\/p>\n<\/li>\n<li data-start=\"440\" data-end=\"506\">\n<p data-start=\"442\" data-end=\"506\">une\u00a0<strong data-start=\"446\" data-end=\"459\">slow axis<\/strong>\u00a0(axe lente) \u2192 divergence plus faible, ~5\u201310\u00b0<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"508\" data-end=\"559\">Sans optique, impossible d\u2019injecter dans une fibre.<\/p>\n<h3 data-start=\"508\" data-end=\"559\"><strong data-start=\"571\" data-end=\"631\">2. Premi\u00e8re \u00e9tape : collimation individuelle (FAC \/ SAC)<\/strong><\/h3>\n<p data-start=\"634\" data-end=\"712\"><strong data-start=\"634\" data-end=\"657\">Devant chaque barre<\/strong>, deux optiques microscopiques sont coll\u00e9es ou pos\u00e9es :<\/p>\n<h3 data-start=\"714\" data-end=\"753\">\u2714\ufe0f\u00a0<strong data-start=\"721\" data-end=\"751\">FAC (Fast Axis Collimator)<\/strong><\/h3>\n<p data-start=\"754\" data-end=\"883\">Une lentille cylindrique extr\u00eamement fine, pos\u00e9e \u00e0 quelques microns de la diode.<br data-start=\"834\" data-end=\"837\" \/>But : r\u00e9duire la divergence extr\u00eame verticale.<\/p>\n<h3 data-start=\"885\" data-end=\"924\">\u2714\ufe0f\u00a0<strong data-start=\"892\" data-end=\"922\">SAC (Slow Axis Collimator)<\/strong><\/h3>\n<p data-start=\"925\" data-end=\"1022\">Une seconde lentille cylindrique, beaucoup plus grosse.<br data-start=\"980\" data-end=\"983\" \/>But : collimater l\u2019axe lent horizontal.<\/p>\n<p data-start=\"1024\" data-end=\"1110\">\u27a1\ufe0f R\u00e9sultat : chaque barre \u00e9met un faisceau plat et rectangulaire, mais\u00a0<strong data-start=\"1096\" data-end=\"1109\">collimat\u00e9<\/strong>.<\/p>\n<h3 data-start=\"1024\" data-end=\"1110\"><strong data-start=\"1122\" data-end=\"1178\">3. Combinaison g\u00e9om\u00e9trique : \u201cspatial beam stacking\u201d<\/strong><\/h3>\n<p data-start=\"1180\" data-end=\"1198\">Voici l\u2019id\u00e9e cl\u00e9 :<\/p>\n<h2 data-start=\"1180\" data-end=\"1198\"><span style=\"color: #ff00ff;\"><strong data-start=\"1206\" data-end=\"1354\">Les 18 faisceaux sont superpos\u00e9s spatialement : on les met c\u00f4te \u00e0 c\u00f4te dans une dimension, mais on r\u00e9duit l\u2019autre dimension gr\u00e2ce aux lentilles.<\/strong><\/span><\/h2>\n<p data-start=\"1356\" data-end=\"1367\">On aligne :<\/p>\n<ul data-start=\"1369\" data-end=\"1477\">\n<li data-start=\"1369\" data-end=\"1412\">\n<p data-start=\"1371\" data-end=\"1412\">18 barres verticalement (= une \u201cstack\u201d)<\/p>\n<\/li>\n<li data-start=\"1413\" data-end=\"1477\">\n<p data-start=\"1415\" data-end=\"1477\">18 faisceaux deviennent une\u00a0<strong data-start=\"1443\" data-end=\"1475\">pile de faisceaux parall\u00e8les<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1479\" data-end=\"1543\">Ces faisceaux sont ensuite compress\u00e9s optiquement en utilisant :<\/p>\n<h3 data-start=\"1545\" data-end=\"1590\">\u2714\ufe0f Lentilles d\u2019imagerie (relais optiques)<\/h3>\n<p data-start=\"1591\" data-end=\"1652\">elles cr\u00e9ent une image r\u00e9duite de la matrice des 18 faisceaux<\/p>\n<h3 data-start=\"1654\" data-end=\"1711\">\u2714\ufe0f Prismes ou optiques en zigzag (comme sur ta photo)<\/h3>\n<p data-start=\"1712\" data-end=\"1769\">elles d\u00e9placent les faisceaux dans une g\u00e9om\u00e9trie compacte<\/p>\n<h3 data-start=\"1771\" data-end=\"1800\">\u2714\ufe0f Light-shaping optics<\/h3>\n<p data-start=\"1801\" data-end=\"1934\">c\u2019est l\u2019ensemble des petites briques blanches :<br data-start=\"1860\" data-end=\"1863\" \/>elles r\u00e9orientent, inclinent, d\u00e9calent, et homog\u00e9n\u00e9isent les faisceaux.<\/p>\n<h3 data-start=\"1801\" data-end=\"1934\"><strong data-start=\"1946\" data-end=\"1985\">4. Mise en forme du paquet lumineux<\/strong><\/h3>\n<ul data-start=\"1999\" data-end=\"2214\">\n<li data-start=\"1999\" data-end=\"2063\">\n<p data-start=\"2001\" data-end=\"2063\">Les 18 faisceaux sont\u00a0<strong data-start=\"2023\" data-end=\"2038\">c\u00f4te \u00e0 c\u00f4te<\/strong>, espac\u00e9s r\u00e9guli\u00e8rement<\/p>\n<\/li>\n<li data-start=\"2064\" data-end=\"2214\">\n<p data-start=\"2066\" data-end=\"2132\">L\u2019optique les\u00a0<strong data-start=\"2080\" data-end=\"2093\">redessine<\/strong>\u00a0pour qu\u2019ils tiennent exactement dans :<\/p>\n<ul data-start=\"2135\" data-end=\"2214\">\n<li data-start=\"2135\" data-end=\"2167\">\n<p data-start=\"2137\" data-end=\"2167\">une fibre de\u00a0<strong data-start=\"2150\" data-end=\"2164\">200\u2013400 \u03bcm<\/strong>,\u00a0 NA 0.22\u00a0 \u00a0un point de focalisation<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p data-start=\"2216\" data-end=\"2237\">Cette \u00e9tape utilise :<\/p>\n<h5 data-start=\"2239\" data-end=\"2317\">\ud83d\udd39 Lentilles de focalisation (souvent une ou deux lentilles asph\u00e9riques)<\/h5>\n<h5 data-start=\"2318\" data-end=\"2386\">\ud83d\udd39 Barre de micro-lentilles en escalier (visible sur ta photo)<\/h5>\n<h5 data-start=\"2387\" data-end=\"2482\">\ud83d\udd39 Un syst\u00e8me de\u00a0<strong data-start=\"2408\" data-end=\"2425\">sym\u00e9trisation<\/strong>\u00a0(pour transformer la forme rectangulaire en tache ronde)<\/h5>\n<p><strong data-start=\"2494\" data-end=\"2533\">5. Combinaison finale dans la fibre<\/strong><\/p>\n<p data-start=\"2535\" data-end=\"2565\">Pour injecter dans une fibre :<\/p>\n<ol data-start=\"2567\" data-end=\"2984\">\n<li data-start=\"2567\" data-end=\"2644\">\n<p data-start=\"2570\" data-end=\"2644\">Les 18 faisceaux collimat\u00e9s sont\u00a0<strong data-start=\"2603\" data-end=\"2614\">r\u00e9duits<\/strong>\u00a0optiquement (d\u00e9magnification)<\/p>\n<\/li>\n<li data-start=\"2645\" data-end=\"2702\">\n<p data-start=\"2648\" data-end=\"2702\">Puis\u00a0<strong data-start=\"2653\" data-end=\"2666\">focalis\u00e9s<\/strong>\u00a0exactement sur l\u2019entr\u00e9e de la fibre<\/p>\n<\/li>\n<li data-start=\"2703\" data-end=\"2847\">\n<p data-start=\"2706\" data-end=\"2847\">Chaque faisceau occupe un\u00a0<strong data-start=\"2732\" data-end=\"2758\">mode spatial diff\u00e9rent<\/strong>\u00a0de la fibre multimode<br data-start=\"2780\" data-end=\"2783\" \/>(on ne combine pas en phase \u2192 ce n\u2019est pas un laser coh\u00e9rent)<\/p>\n<\/li>\n<li data-start=\"2848\" data-end=\"2984\">\n<p data-start=\"2851\" data-end=\"2913\">Toute la puissance se combine dans la fibre car elle accepte :<\/p>\n<ul data-start=\"2917\" data-end=\"2984\">\n<li data-start=\"2917\" data-end=\"2949\">\n<p data-start=\"2919\" data-end=\"2949\">plusieurs centaines de modes<\/p>\n<\/li>\n<li data-start=\"2953\" data-end=\"2984\">\n<p data-start=\"2955\" data-end=\"2984\">une ouverture num\u00e9rique large<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p data-start=\"2986\" data-end=\"3040\">\u27a1\ufe0f\u00a0<strong data-start=\"2989\" data-end=\"3040\">On combine la puissance, mais pas la coh\u00e9rence.<\/strong><\/p>\n<\/div><\/section><\/div>\n<div class=\"flex_column av_one_full  flex_column_div av-zero-column-padding first  avia-builder-el-19  el_after_av_one_full  el_before_av_one_full  column-top-margin\" style='border-radius:0px; '><div  class='avia-image-container  av-styling-    avia-builder-el-20  avia-builder-el-no-sibling  avia-align-center '  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\"  ><div class='avia-image-container-inner'><div class='avia-image-overlay-wrap'><img decoding=\"async\" class='wp-image-3952 avia-img-lazy-loading-not-3952 avia_image' src=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251130_121344-scaled.jpg\" alt='' title='20251130_121344' height=\"1267\" width=\"2560\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251130_121344-scaled.jpg 2560w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251130_121344-300x148.jpg 300w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251130_121344-1030x510.jpg 1030w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251130_121344-768x380.jpg 768w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251130_121344-1536x760.jpg 1536w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251130_121344-2048x1014.jpg 2048w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251130_121344-1500x742.jpg 1500w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251130_121344-705x349.jpg 705w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><\/div><\/div><\/div><\/div>\n<div class=\"flex_column av_one_full  flex_column_div av-zero-column-padding first  avia-builder-el-21  el_after_av_one_full  el_before_av_one_full  column-top-margin\" style='border-radius:0px; '><section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><p data-start=\"0\" data-end=\"369\">Pour passer d\u2019une <strong data-start=\"35\" data-end=\"75\">pile de 18 faisceaux espac\u00e9s de 1 mm<\/strong> \u00e0 une <strong data-start=\"82\" data-end=\"122\">tache (ou entr\u00e9e de fibre) de 200 \u00b5m<\/strong>, il faut <em data-start=\"132\" data-end=\"155\">r\u00e9arranger et r\u00e9duire<\/em> la dimension spatiale sans perdre trop d\u2019\u00e9nergie ni d\u00e9passer l\u2019ouverture du syst\u00e8me (NA \/ \u00e9tendue). Je d\u00e9cris d\u2019abord le principe physique, puis une recette pratique pas-\u00e0-pas avec chiffres et composants typiques.<\/p>\n<h3 data-start=\"0\" data-end=\"369\">1) Principe physique cl\u00e9 \u2014 <strong data-start=\"405\" data-end=\"458\">\u00e9tendue (A\u00b7\u03a9) \/ conservation de l\u2019\u00e9nergie optique<\/strong><\/h3>\n<p data-start=\"459\" data-end=\"827\">L\u2019\u00e9tendue (ou <em data-start=\"473\" data-end=\"499\">brightness et acceptance<\/em>) se conserve : si tu r\u00e9duis la <em data-start=\"531\" data-end=\"540\">surface<\/em> lin\u00e9airement par un facteur <span class=\"katex\"><span class=\"katex-mathml\">MM<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">M<\/span><\/span><\/span><\/span> (d\u00e9magnification), l\u2019angle (divergence) augmente environ par <span class=\"katex\"><span class=\"katex-mathml\">1\/M1\/M<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">1\/<\/span><span class=\"mord mathnormal\">M<\/span><\/span><\/span><\/span> (pour petites angles).<br data-start=\"666\" data-end=\"669\" \/>Donc : <strong data-start=\"676\" data-end=\"691\">d\u00e9magnifier<\/strong> de 1 mm \u2192 0,2 mm (facteur <span class=\"katex\"><span class=\"katex-mathml\">M=0,2M=0{,}2<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">M<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">0<\/span><span class=\"mord\"><span class=\"mpunct\">,<\/span><\/span><span class=\"mord\">2<\/span><\/span><\/span><\/span>, soit 5\u00d7 de r\u00e9duction lin\u00e9aire) augmente la divergence dans l\u2019axe compress\u00e9 par 5. Il faut donc :<\/p>\n<ul data-start=\"829\" data-end=\"992\">\n<li data-start=\"829\" data-end=\"898\">\n<p data-start=\"831\" data-end=\"898\">collimater\/pr\u00e9-conditionner les faisceaux (contr\u00f4ler la NA), puis<\/p>\n<\/li>\n<li data-start=\"899\" data-end=\"992\">\n<p data-start=\"901\" data-end=\"992\">v\u00e9rifier que la fibre ou l\u2019optique d\u2019entr\u00e9e accepte la nouvelle divergence (NA suffisante).<\/p>\n<\/li>\n<li data-start=\"899\" data-end=\"992\">\n<p data-start=\"901\" data-end=\"992\"><span style=\"font-size: 34px; font-weight: 600; letter-spacing: 0px;\">2) Calcul simple \u2014 facteur requis<\/span><\/p>\n<\/li>\n<\/ul>\n<ul data-start=\"1035\" data-end=\"1164\">\n<li data-start=\"1035\" data-end=\"1068\">\n<p data-start=\"1037\" data-end=\"1068\">Espacement initial = 1.000 \u00b5m<\/p>\n<\/li>\n<li data-start=\"1069\" data-end=\"1098\">\n<p data-start=\"1071\" data-end=\"1098\">Espacement cible = 200 \u00b5m<\/p>\n<\/li>\n<li data-start=\"1099\" data-end=\"1164\">\n<p data-start=\"1101\" data-end=\"1164\">Facteur lin\u00e9aire <span class=\"katex\"><span class=\"katex-mathml\">M=200\/1000=0,2M = 200\/1000 = 0{,}2<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">M<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">200\/1000<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">0<\/span><span class=\"mord\"><span class=\"mpunct\">,<\/span><\/span><span class=\"mord\">2<\/span><\/span><\/span><\/span> \u2192 d\u00e9magnification 5\u00d7.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1166\" data-end=\"1272\">Si tu as une largeur active par barre ~0,8 mm et un pitch 1 mm, la m\u00eame r\u00e9duction s\u2019applique \u00e0 la largeur.<\/p>\n<h3 data-start=\"1166\" data-end=\"1272\">3) Cha\u00eene optique pratique (\u00e9tapes)<\/h3>\n<h3 data-start=\"1318\" data-end=\"1372\">\u00c9tape A \u2014 <strong data-start=\"1332\" data-end=\"1372\">Collimation individuelle (FAC + SAC)<\/strong><\/h3>\n<p data-start=\"1373\" data-end=\"1463\">Avant de compresser, chaque barre doit sortir un faisceau contr\u00f4l\u00e9 dans fast &amp; slow axis :<\/p>\n<ul data-start=\"1464\" data-end=\"1666\">\n<li data-start=\"1464\" data-end=\"1527\">\n<p data-start=\"1466\" data-end=\"1527\">FAC (fast-axis collimator) pour r\u00e9duire divergence verticale.<\/p>\n<\/li>\n<li data-start=\"1528\" data-end=\"1666\">\n<p data-start=\"1530\" data-end=\"1666\">SAC (slow-axis collimator) pour la direction lente.<br \/>\nR\u00e9sultat : faisceaux rectangles, faibles divergences contr\u00f4l\u00e9es (NA initial faible).<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1668\" data-end=\"1728\">\u00c9tape B \u2014 <strong data-start=\"1682\" data-end=\"1728\">Former la \u201cstack\u201d et nettoyer la g\u00e9om\u00e9trie<\/strong><\/h3>\n<ul data-start=\"1729\" data-end=\"1896\">\n<li data-start=\"1729\" data-end=\"1807\">\n<p data-start=\"1731\" data-end=\"1807\">Aligner les 18 faisceaux en une pile r\u00e9guli\u00e8re (V-groove, support monobloc).<\/p>\n<\/li>\n<li data-start=\"1808\" data-end=\"1896\">\n<p data-start=\"1810\" data-end=\"1896\">Utiliser microlentilles ou small prism-periscope blocks pour r\u00e9aligner rigoureusement.<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1898\" data-end=\"1963\">\u00c9tape C \u2014 <strong data-start=\"1912\" data-end=\"1963\">Compression\/anamorphose dans l\u2019axe d\u2019empilement<\/strong><\/h3>\n<ul data-start=\"1964\" data-end=\"2467\">\n<li data-start=\"1964\" data-end=\"2350\">\n<p data-start=\"1966\" data-end=\"2124\">Utiliser une paire de <strong data-start=\"1988\" data-end=\"2014\">lentilles cylindriques<\/strong> (ou une paire anamorphique) pour r\u00e9duire la dimension <em data-start=\"2069\" data-end=\"2081\">uniquement<\/em> dans l\u2019axe vertical (celui des 18 barres).<\/p>\n<ul data-start=\"2127\" data-end=\"2350\">\n<li data-start=\"2127\" data-end=\"2256\">\n<p data-start=\"2129\" data-end=\"2256\">Lentille 1 (fonctionnant comme collimatrice \/ relai), lentille 2 (focale plus petite) pour obtenir <span class=\"katex\"><span class=\"katex-mathml\">M=f2\/f1=0,2M = f_2 \/ f_1 = 0{,}2<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">M<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">f<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">2<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mord\">\/<\/span><span class=\"mord\"><span class=\"mord mathnormal\">f<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">1<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">0<\/span><span class=\"mord\"><span class=\"mpunct\">,<\/span><\/span><span class=\"mord\">2<\/span><\/span><\/span><\/span>.<\/p>\n<\/li>\n<li data-start=\"2259\" data-end=\"2350\">\n<p data-start=\"2261\" data-end=\"2350\">Exemple pratique : <span class=\"katex\"><span class=\"katex-mathml\">f1=50\u00a0mmf_1 = 50\\ \\text{mm}<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">f<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">1<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">50<\/span><span class=\"mspace\">\u00a0<\/span><span class=\"mord text\"><span class=\"mord\">mm<\/span><\/span><\/span><\/span><\/span>, <span class=\"katex\"><span class=\"katex-mathml\">f2=10\u00a0mmf_2 = 10\\ \\text{mm}<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">f<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">2<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">10<\/span><span class=\"mspace\">\u00a0<\/span><span class=\"mord text\"><span class=\"mord\">mm<\/span><\/span><\/span><\/span><\/span> \u2192 M = 0.2 (d\u00e9mag \u00d75).<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li data-start=\"2351\" data-end=\"2467\">\n<p data-start=\"2353\" data-end=\"2467\">Pour r\u00e9duire <strong data-start=\"2366\" data-end=\"2383\">les deux axes<\/strong> (si n\u00e9cessaire) on utiliserait des lentilles sph\u00e9riques\/asph\u00e9riques en imagerie 2D.<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"2469\" data-end=\"2518\">\u00c9tape D \u2014 <strong data-start=\"2483\" data-end=\"2518\">Relay imaging et t\u00e9l\u00e9centricit\u00e9<\/strong><\/h3>\n<ul data-start=\"2519\" data-end=\"2760\">\n<li data-start=\"2519\" data-end=\"2646\">\n<p data-start=\"2521\" data-end=\"2646\">Construire un <strong data-start=\"2535\" data-end=\"2553\">syst\u00e8me relais<\/strong> (2 ou 3 lentilles) pour amener l\u2019image r\u00e9duite pr\u00e9cis\u00e9ment \u00e0 l\u2019entr\u00e9e de la fibre\/ferrule.<\/p>\n<\/li>\n<li data-start=\"2647\" data-end=\"2760\">\n<p data-start=\"2649\" data-end=\"2760\">Id\u00e9al : syst\u00e8me <em data-start=\"2665\" data-end=\"2680\">t\u00e9l\u00e9centrique<\/em> c\u00f4t\u00e9 image pour minimiser les d\u00e9calages de position quand on bouge la lentille.<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"2762\" data-end=\"2813\">\u00c9tape E \u2014 <strong data-start=\"2776\" data-end=\"2813\">Focalisation finale dans la fibre<\/strong><\/h3>\n<ul data-start=\"2814\" data-end=\"3060\">\n<li data-start=\"2814\" data-end=\"2966\">\n<p data-start=\"2816\" data-end=\"2966\">Utiliser une lentille asph\u00e9rique de couplage (objectifs pour fibre) pour focaliser la pile compacte sur le c\u0153ur de la fibre (ou sur la zone d\u2019entr\u00e9e).<\/p>\n<\/li>\n<li data-start=\"2967\" data-end=\"3060\">\n<p data-start=\"2969\" data-end=\"3060\">Utiliser index-matching gel, ferrule pr\u00e9cis, et positionnement en 6 axes pour l\u2019alignement.<\/p>\n<\/li>\n<li data-start=\"2967\" data-end=\"3060\">\n<h3 data-start=\"2969\" data-end=\"3060\"><span style=\"font-size: 34px; font-weight: 600; letter-spacing: 0px;\">4) Exigences num\u00e9riques &amp; v\u00e9rifications<\/span><\/h3>\n<\/li>\n<\/ul>\n<h3 data-start=\"3110\" data-end=\"3134\">a) NA \/ divergence<\/h3>\n<p data-start=\"3135\" data-end=\"3377\">Si tu d\u00e9magnifies par 5\u00d7 dans l\u2019axe empil\u00e9, la divergence dans cet axe augmente 5\u00d7.<br data-start=\"3218\" data-end=\"3221\" \/>Ex : si apr\u00e8s collimateurs la divergence (slow axis) = 0,04 (NA\u22480,04), apr\u00e8s demag \u2192 NA\u22480,20. Donc <strong data-start=\"3320\" data-end=\"3356\">la fibre doit accepter NA \u2265 0,20<\/strong> (typique : 0,22 OK).<\/p>\n<h3 data-start=\"3379\" data-end=\"3403\">b) \u00c9tendue conserv\u00e9e<\/h3>\n<p data-start=\"3404\" data-end=\"3504\">V\u00e9rifie que l\u2019aire r\u00e9duite \u00d7 l\u2019angle augment\u00e9 reste \u2264 \u00e9tendue accept\u00e9e de la fibre. Si non \u2192 pertes.<\/p>\n<h3 data-start=\"3506\" data-end=\"3538\">c) Alignement \/ tol\u00e9rances<\/h3>\n<ul data-start=\"3539\" data-end=\"3807\">\n<li data-start=\"3539\" data-end=\"3641\">\n<p data-start=\"3541\" data-end=\"3641\">Placement de chaque faisceau sur image finale : tol\u00e9rance de l\u2019ordre de <strong data-start=\"3613\" data-end=\"3628\">quelques \u00b5m<\/strong> (2\u201310 \u00b5m).<\/p>\n<\/li>\n<li data-start=\"3642\" data-end=\"3705\">\n<p data-start=\"3644\" data-end=\"3705\">Angle \/ tilt de chaque micro-lentille contr\u00f4l\u00e9 en \u00b5radians.<\/p>\n<\/li>\n<li data-start=\"3706\" data-end=\"3807\">\n<p data-start=\"3708\" data-end=\"3807\">Temp\u00e9rature et expansion thermique doivent \u00eatre g\u00e9r\u00e9es (Cu \/ Invar pour supports, refroidissement).<\/p>\n<ul data-start=\"3860\" data-end=\"4405\">\n<li data-start=\"3860\" data-end=\"3935\">\n<p data-start=\"3862\" data-end=\"3935\"><strong data-start=\"3862\" data-end=\"3869\">FAC<\/strong> : micro-cylindrical lens coll\u00e9e (distance 10\u201350 \u00b5m \u00e0 la barre).<\/p>\n<\/li>\n<li data-start=\"3936\" data-end=\"4009\">\n<p data-start=\"3938\" data-end=\"4009\"><strong data-start=\"3938\" data-end=\"3945\">SAC<\/strong> : micro-lentille asph\u00e9rique cylindrique distante quelques mm.<\/p>\n<\/li>\n<li data-start=\"4010\" data-end=\"4091\">\n<p data-start=\"4012\" data-end=\"4091\"><strong data-start=\"4012\" data-end=\"4031\">Anamorphic pair<\/strong> : cyl 1 <span class=\"katex\"><span class=\"katex-mathml\">f1=50f_1 = 50<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">f<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">1<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">50<\/span><\/span><\/span><\/span> mm, cyl 2 <span class=\"katex\"><span class=\"katex-mathml\">f2=10f_2 = 10<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">f<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">2<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">10<\/span><\/span><\/span><\/span> mm \u2192 M = 0.2.<\/p>\n<\/li>\n<li data-start=\"4092\" data-end=\"4193\">\n<p data-start=\"4094\" data-end=\"4193\"><strong data-start=\"4094\" data-end=\"4103\">Relay<\/strong> : doublet achromatique (imagerie 1:1 ou t\u00e9l\u00e9centrique) pour transf\u00e9rer la pile r\u00e9duite.<\/p>\n<\/li>\n<li data-start=\"4194\" data-end=\"4309\">\n<p data-start=\"4196\" data-end=\"4309\"><strong data-start=\"4196\" data-end=\"4208\">Focusing<\/strong> : lentille asph\u00e9rique pour fibre, focal length choisie selon diam\u00e8tre ferrule (p.ex. f \u2248 8\u201316 mm).<\/p>\n<\/li>\n<li data-start=\"4310\" data-end=\"4405\">\n<p data-start=\"4312\" data-end=\"4405\"><strong data-start=\"4312\" data-end=\"4321\">Fibre<\/strong> : multimode, c\u0153ur 200\u2013400 \u00b5m, NA \u2265 0.22 pour 260 W (\u00e7a d\u00e9pend du damage threshold).<\/p>\n<p data-start=\"3708\" data-end=\"3807\">\n<\/li>\n<li data-start=\"4310\" data-end=\"4405\">\n<h3 data-start=\"3814\" data-end=\"3858\">5) Composants concrets &amp; valeurs d\u2019exemple<\/h3>\n<ul data-start=\"3860\" data-end=\"4405\">\n<li data-start=\"3860\" data-end=\"3935\">\n<p data-start=\"3862\" data-end=\"3935\"><strong data-start=\"3862\" data-end=\"3869\">FAC<\/strong> : micro-cylindrical lens coll\u00e9e (distance 10\u201350 \u00b5m \u00e0 la barre).<\/p>\n<\/li>\n<li data-start=\"3936\" data-end=\"4009\">\n<p data-start=\"3938\" data-end=\"4009\"><strong data-start=\"3938\" data-end=\"3945\">SAC<\/strong> : micro-lentille asph\u00e9rique cylindrique distante quelques mm.<\/p>\n<\/li>\n<li data-start=\"4010\" data-end=\"4091\">\n<p data-start=\"4012\" data-end=\"4091\"><strong data-start=\"4012\" data-end=\"4031\">Anamorphic pair<\/strong> : cyl 1 <span class=\"katex\"><span class=\"katex-mathml\">f1=50f_1 = 50<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">f<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">1<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">50<\/span><\/span><\/span><\/span> mm, cyl 2 <span class=\"katex\"><span class=\"katex-mathml\">f2=10f_2 = 10<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">f<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">2<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">10<\/span><\/span><\/span><\/span> mm \u2192 M = 0.2.<\/p>\n<\/li>\n<li data-start=\"4092\" data-end=\"4193\">\n<p data-start=\"4094\" data-end=\"4193\"><strong data-start=\"4094\" data-end=\"4103\">Relay<\/strong> : doublet achromatique (imagerie 1:1 ou t\u00e9l\u00e9centrique) pour transf\u00e9rer la pile r\u00e9duite.<\/p>\n<\/li>\n<li data-start=\"4194\" data-end=\"4309\">\n<p data-start=\"4196\" data-end=\"4309\"><strong data-start=\"4196\" data-end=\"4208\">Focusing<\/strong> : lentille asph\u00e9rique pour fibre, focal length choisie selon diam\u00e8tre ferrule (p.ex. f \u2248 8\u201316 mm).<\/p>\n<\/li>\n<li data-start=\"4310\" data-end=\"4405\">\n<p data-start=\"4312\" data-end=\"4405\"><strong data-start=\"4312\" data-end=\"4321\">Fibre<\/strong> : multimode, c\u0153ur 200\u2013400 \u00b5m, NA \u2265 0.22 pour 260 W (\u00e7a d\u00e9pend du damage threshold).<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"4407\" data-end=\"4410\" \/>\n<h3 data-start=\"4412\" data-end=\"4450\">6) Alternatives \/ solutions avanc\u00e9es<\/h3>\n<ul data-start=\"4452\" data-end=\"4976\">\n<li data-start=\"4452\" data-end=\"4709\">\n<p data-start=\"4454\" data-end=\"4709\"><strong data-start=\"4454\" data-end=\"4488\">Micro-lens array + fused taper<\/strong> : chaque faisceau via micro-lentille sur un petit bundle de fibres, puis <em data-start=\"4562\" data-end=\"4569\">taper<\/em> fondus ensemble vers un c\u0153ur plus petit. Avantages : compact. Inconv\u00e9nients : pertes, seuils de dommage thermique, co\u00fbt \u00e9lev\u00e9 de la fusion.<\/p>\n<\/li>\n<li data-start=\"4710\" data-end=\"4853\">\n<p data-start=\"4712\" data-end=\"4853\"><strong data-start=\"4712\" data-end=\"4750\">Diffractive optical elements (DOE)<\/strong> ou holographie pour reformatter la pile vers un profil rond \u2192 utile pour homog\u00e9n\u00e9iser la distribution.<\/p>\n<\/li>\n<li data-start=\"4854\" data-end=\"4976\">\n<p data-start=\"4856\" data-end=\"4976\"><strong data-start=\"4856\" data-end=\"4889\">Beam homogenizer \/ light-pipe<\/strong> apr\u00e8s combinaison pour lisser hotspots avant la fibre (mais g\u00e9n\u00e8re pertes et chauffe).<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"4978\" data-end=\"4981\" \/>\n<h3 data-start=\"4983\" data-end=\"5015\">7) Erreurs fr\u00e9quentes &amp; pi\u00e8ges<\/h3>\n<ul data-start=\"5017\" data-end=\"5385\">\n<li data-start=\"5017\" data-end=\"5132\">\n<p data-start=\"5019\" data-end=\"5132\">Oublier la <strong data-start=\"5030\" data-end=\"5056\">conservation d\u2019\u00e9tendue<\/strong> \u2192 incapable d\u2019injecter toute la puissance dans la fibre (grosses pertes).<\/p>\n<\/li>\n<li data-start=\"5133\" data-end=\"5210\">\n<p data-start=\"5135\" data-end=\"5210\">Sous-estimer la <strong data-start=\"5151\" data-end=\"5179\">NA apr\u00e8s d\u00e9magnification<\/strong> \u2192 angle trop grand \u2192 pertes.<\/p>\n<\/li>\n<li data-start=\"5211\" data-end=\"5290\">\n<p data-start=\"5213\" data-end=\"5290\">Mauvais refroidissement pr\u00e8s des micro-lentilles \u2192 d\u00e9salignement thermique.<\/p>\n<\/li>\n<li data-start=\"5291\" data-end=\"5385\">\n<p data-start=\"5293\" data-end=\"5385\">Collimation FAC insuffisante \u2192 apr\u00e8s d\u00e9magnification, le faisceau \u00ab explose \u00bb en divergence.<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"5387\" data-end=\"5390\" \/>\n<h3 data-start=\"5392\" data-end=\"5444\">8) Checklist pour concevoir ton syst\u00e8me (pratique)<\/h3>\n<ol data-start=\"5446\" data-end=\"5928\">\n<li data-start=\"5446\" data-end=\"5501\">\n<p data-start=\"5449\" data-end=\"5501\">Mesurer NA sortie apr\u00e8s FAC\/SAC pour chaque barre.<\/p>\n<\/li>\n<li data-start=\"5502\" data-end=\"5585\">\n<p data-start=\"5505\" data-end=\"5585\">Choisir M = 0.2 (ex) et calculer NA_image = NA_object \/ M (v\u00e9rifier fibre NA).<\/p>\n<\/li>\n<li data-start=\"5586\" data-end=\"5652\">\n<p data-start=\"5589\" data-end=\"5652\">Dimensionner paire de lentilles cylindriques (f1, f2) pour M.<\/p>\n<\/li>\n<li data-start=\"5653\" data-end=\"5727\">\n<p data-start=\"5656\" data-end=\"5727\">Simuler en ray-tracing (Zemax\/OpticStudio \/ CodeV) la cha\u00eene enti\u00e8re.<\/p>\n<\/li>\n<li data-start=\"5728\" data-end=\"5792\">\n<p data-start=\"5731\" data-end=\"5792\">Sp\u00e9cifier tol\u00e9rances m\u00e9caniques (position \u00b1\u00b5m, tilt \u00b1\u00b5rad).<\/p>\n<\/li>\n<li data-start=\"5793\" data-end=\"5876\">\n<p data-start=\"5796\" data-end=\"5876\">Pr\u00e9voir active alignment: driver + moniteur puissance pour ajuster chaque axe.<\/p>\n<\/li>\n<li data-start=\"5877\" data-end=\"5928\">\n<p data-start=\"5880\" data-end=\"5928\">AR coatings, index matching, et refroidissement.<\/p>\n<p data-start=\"0\" data-end=\"109\">Aligner <strong data-start=\"8\" data-end=\"30\">18 faisceaux laser<\/strong> avec une pr\u00e9cision de <strong data-start=\"53\" data-end=\"61\">1 \u00b5m<\/strong> (voire 0,5 \u00b5m) n\u2019est possible qu\u2019en combinant :<\/p>\n<ol data-start=\"111\" data-end=\"431\">\n<li data-start=\"111\" data-end=\"172\">\n<p data-start=\"114\" data-end=\"172\"><strong data-start=\"114\" data-end=\"150\">Une m\u00e9canique extr\u00eamement stable<\/strong> (base cuivre\/Invar)<\/p>\n<\/li>\n<li data-start=\"173\" data-end=\"239\">\n<p data-start=\"176\" data-end=\"239\"><strong data-start=\"176\" data-end=\"210\">Optiques pr\u00e9-align\u00e9es en usine<\/strong> avec rep\u00e8res lithographi\u00e9s<\/p>\n<\/li>\n<li data-start=\"240\" data-end=\"321\">\n<p data-start=\"243\" data-end=\"321\"><strong data-start=\"243\" data-end=\"266\">Un alignement actif<\/strong> assist\u00e9 par des cam\u00e9ras, photodiodes et micro-robots<\/p>\n<\/li>\n<li data-start=\"322\" data-end=\"374\">\n<p data-start=\"325\" data-end=\"374\"><strong data-start=\"325\" data-end=\"372\">Un collage UV ou brasage \u00e0 basse contrainte<\/strong><\/p>\n<\/li>\n<li data-start=\"375\" data-end=\"431\">\n<p data-start=\"378\" data-end=\"431\"><strong data-start=\"378\" data-end=\"431\">Des corrections thermiques calcul\u00e9es et int\u00e9gr\u00e9es<\/strong><\/p>\n<\/li>\n<\/ol>\n<p data-start=\"433\" data-end=\"521\">Je te d\u00e9cris exactement ce que font les fabricants (nLIGHT, Coherent, II-VI, Lumentum\u2026).<\/p>\n<hr data-start=\"523\" data-end=\"526\" \/>\n<h3 data-start=\"528\" data-end=\"591\">1) <strong data-start=\"536\" data-end=\"591\">M\u00e9canique ultra stable pour \u00e9viter les d\u00e9formations<\/strong><\/h3>\n<p data-start=\"592\" data-end=\"653\">Avant m\u00eame d\u2019aligner, il faut un support qui <em data-start=\"637\" data-end=\"651\">ne bouge pas<\/em> :<\/p>\n<h3 data-start=\"655\" data-end=\"683\">\u2714 Mat\u00e9riaux utilis\u00e9s :<\/h3>\n<ul data-start=\"684\" data-end=\"855\">\n<li data-start=\"684\" data-end=\"737\">\n<p data-start=\"686\" data-end=\"737\"><strong data-start=\"686\" data-end=\"701\">Cuivre OFHC<\/strong> (tr\u00e8s bonne conduction thermique)<\/p>\n<\/li>\n<li data-start=\"738\" data-end=\"798\">\n<p data-start=\"740\" data-end=\"798\"><strong data-start=\"740\" data-end=\"749\">Invar<\/strong> (coefficient de dilatation extr\u00eamement faible)<\/p>\n<\/li>\n<li data-start=\"799\" data-end=\"855\">\n<p data-start=\"801\" data-end=\"855\">Parfois <strong data-start=\"809\" data-end=\"823\">c\u00e9ramiques<\/strong> (stabilit\u00e9 thermique, rigidit\u00e9)<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"857\" data-end=\"883\">\u2714 Structure monobloc<\/h3>\n<p data-start=\"884\" data-end=\"1014\">Les rainures, marches, et surfaces de r\u00e9f\u00e9rence sont <strong data-start=\"937\" data-end=\"966\">usin\u00e9es dans le m\u00eame bloc<\/strong> \u2192 pr\u00e9cision CNC de 5\u201310 \u00b5m, puis rodage \u00e0 1 \u00b5m.<\/p>\n<p data-start=\"1016\" data-end=\"1096\">\ud83d\udc49 R\u00e9sultat : la base est \u201cg\u00e9om\u00e9triquement immobile\u201d quand la temp\u00e9rature varie.<\/p>\n<h3 data-start=\"1103\" data-end=\"1173\">2) <strong data-start=\"1111\" data-end=\"1173\">Positionnement des diodes avec des rep\u00e8res lithographiques<\/strong><\/h3>\n<p data-start=\"1174\" data-end=\"1298\">Sur chaque barre laser, il y a des <strong data-start=\"1209\" data-end=\"1234\">marks lithographiques<\/strong> (d\u00e9p\u00f4ts m\u00e9talliques ou traits grav\u00e9s) d\u00e9tectables par cam\u00e9ras :<\/p>\n<ul data-start=\"1300\" data-end=\"1474\">\n<li data-start=\"1300\" data-end=\"1333\">\n<p data-start=\"1302\" data-end=\"1333\">Tol\u00e9rance des marks : ~0,2 \u00b5m<\/p>\n<\/li>\n<li data-start=\"1334\" data-end=\"1403\">\n<p data-start=\"1336\" data-end=\"1403\">Position de la puce sur son submount (C-mount, D-mount) : \u00b11\u20132 \u00b5m<\/p>\n<\/li>\n<li data-start=\"1404\" data-end=\"1474\">\n<p data-start=\"1406\" data-end=\"1474\">Le support a aussi des rep\u00e8res optiques grav\u00e9s par photolithographie<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1476\" data-end=\"1559\">\u279c On pose la diode exactement sur ces rep\u00e8res \u2192 <strong data-start=\"1524\" data-end=\"1558\">pr\u00e9-alignement passif \u00e0 1\u20132 \u00b5m<\/strong>.<\/p>\n<h3 data-start=\"1566\" data-end=\"1654\">3) <strong data-start=\"1574\" data-end=\"1654\">Alignement actif (robotis\u00e9) en 6 axes avec mesure de puissance en temps r\u00e9el<\/strong><\/h3>\n<p data-start=\"1655\" data-end=\"1676\">C\u2019est la vraie magie.<\/p>\n<h3 data-start=\"1678\" data-end=\"1738\">Le module est mis dans une station d\u2019alignement active :<\/h3>\n<ul data-start=\"1739\" data-end=\"1908\">\n<li data-start=\"1739\" data-end=\"1794\">\n<p data-start=\"1741\" data-end=\"1794\">table nanopositionn\u00e9e (piezo, r\u00e9solution ~10\u201350 nm)<\/p>\n<\/li>\n<li data-start=\"1795\" data-end=\"1843\">\n<p data-start=\"1797\" data-end=\"1843\">cam\u00e9ra microscope (grossissement 50\u00d7 \u00e0 200\u00d7)<\/p>\n<\/li>\n<li data-start=\"1844\" data-end=\"1869\">\n<p data-start=\"1846\" data-end=\"1869\">photodiodes en sortie<\/p>\n<\/li>\n<li data-start=\"1870\" data-end=\"1908\">\n<p data-start=\"1872\" data-end=\"1908\">ou <em data-start=\"1875\" data-end=\"1881\">d\u00e9j\u00e0<\/em> une fibre de test en place<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1910\" data-end=\"1945\">Pour chaque diode ou lentille :<\/h3>\n<p data-start=\"1946\" data-end=\"2063\">\u27a1\ufe0f on mesure la puissance <strong data-start=\"1972\" data-end=\"1989\">dans la fibre<\/strong> en temps r\u00e9el<br data-start=\"2003\" data-end=\"2006\" \/>\u27a1\ufe0f on bouge la lentille\/diode jusqu\u2019au <strong data-start=\"2045\" data-end=\"2063\">maximum absolu<\/strong><\/p>\n<p data-start=\"2065\" data-end=\"2088\">Ce \u201cscanning\u201d se fait :<\/p>\n<h3 data-start=\"2090\" data-end=\"2100\">Axes :<\/h3>\n<ul data-start=\"2101\" data-end=\"2248\">\n<li data-start=\"2101\" data-end=\"2142\">\n<p data-start=\"2103\" data-end=\"2142\">X : gauche\/droite (pr\u00e9cision ~0,1 \u00b5m)<\/p>\n<\/li>\n<li data-start=\"2143\" data-end=\"2169\">\n<p data-start=\"2145\" data-end=\"2169\">Y : haut\/bas (~0,1 \u00b5m)<\/p>\n<\/li>\n<li data-start=\"2170\" data-end=\"2214\">\n<p data-start=\"2172\" data-end=\"2214\">Z : distance lentille\/diode (~50\u2013100 nm)<\/p>\n<\/li>\n<li data-start=\"2215\" data-end=\"2248\">\n<p data-start=\"2217\" data-end=\"2248\">\u03b8x, \u03b8y, \u03b8z (tilts) : \u00b11\u201310 \u00b5rad<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2250\" data-end=\"2355\">Le syst\u00e8me cherche le <strong data-start=\"2272\" data-end=\"2303\">maximum de couplage optique<\/strong>, ce qui fixe la bonne position <strong data-start=\"2335\" data-end=\"2354\">automatiquement<\/strong>.<\/p>\n<\/li>\n<\/ol>\n<\/li>\n<\/ul>\n<ul data-start=\"4452\" data-end=\"4976\">\n<li data-start=\"4854\" data-end=\"4976\">\n<p data-start=\"4856\" data-end=\"4976\">\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div><\/section><\/div>\n<div class=\"flex_column av_one_full  flex_column_div av-zero-column-padding first  avia-builder-el-23  el_after_av_one_full  el_before_av_one_full  column-top-margin\" style='border-radius:0px; '><div  class='avia-image-container  av-styling-    avia-builder-el-24  avia-builder-el-no-sibling  avia-align-center '  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\"  ><div class='avia-image-container-inner'><div class='avia-image-overlay-wrap'><img decoding=\"async\" class='wp-image-3962 avia-img-lazy-loading-not-3962 avia_image' src=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251129_103321-scaled.jpg\" alt='' title='20251129_103321' height=\"1152\" width=\"2560\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251129_103321-scaled.jpg 2560w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251129_103321-300x135.jpg 300w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251129_103321-1030x464.jpg 1030w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251129_103321-768x346.jpg 768w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251129_103321-1536x691.jpg 1536w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251129_103321-2048x922.jpg 2048w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251129_103321-1500x675.jpg 1500w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251129_103321-705x317.jpg 705w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><\/div><\/div><\/div><\/div>\n<div class=\"flex_column av_one_full  flex_column_div av-zero-column-padding first  avia-builder-el-25  el_after_av_one_full  el_before_av_one_full  column-top-margin\" style='border-radius:0px; '><div  class='avia-image-container  av-styling-    avia-builder-el-26  avia-builder-el-no-sibling  avia-align-center '  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\"  ><div class='avia-image-container-inner'><div class='avia-image-overlay-wrap'><img decoding=\"async\" class='wp-image-3930 avia-img-lazy-loading-not-3930 avia_image' src=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/Capture-decran-2025-10-25-154515.png\" alt='' title='Capture d&#039;\u00e9cran 2025-10-25 154515' height=\"395\" width=\"1383\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/Capture-decran-2025-10-25-154515.png 1383w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/Capture-decran-2025-10-25-154515-300x86.png 300w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/Capture-decran-2025-10-25-154515-1030x294.png 1030w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/Capture-decran-2025-10-25-154515-768x219.png 768w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/11\/Capture-decran-2025-10-25-154515-705x201.png 705w\" sizes=\"(max-width: 1383px) 100vw, 1383px\" \/><\/div><\/div><\/div><\/div>\n<div class=\"flex_column av_one_full  flex_column_div av-zero-column-padding first  avia-builder-el-27  el_after_av_one_full  el_before_av_one_full  column-top-margin\" style='border-radius:0px; '><section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><h3 data-start=\"2362\" data-end=\"2412\">4) <strong data-start=\"2370\" data-end=\"2412\">Collage UV ou brasage apr\u00e8s alignement<\/strong><\/h3>\n<p data-start=\"2413\" data-end=\"2470\">Quand la puissance est maximale, on immobilise la pi\u00e8ce :<\/p>\n<h3 data-start=\"2472\" data-end=\"2488\">Collage UV :<\/h3>\n<ul data-start=\"2489\" data-end=\"2617\">\n<li data-start=\"2489\" data-end=\"2530\">\n<p data-start=\"2491\" data-end=\"2530\">R\u00e9sine tr\u00e8s faible retrait (&lt;&lt; 0,5 %)<\/p>\n<\/li>\n<li data-start=\"2531\" data-end=\"2573\">\n<p data-start=\"2533\" data-end=\"2573\">Durcissement instantan\u00e9 par lumi\u00e8re UV<\/p>\n<\/li>\n<li data-start=\"2574\" data-end=\"2617\">\n<p data-start=\"2576\" data-end=\"2617\">D\u00e9placements post-polym\u00e9risation &lt; 0,5 \u00b5m<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"2619\" data-end=\"2644\">Brasage (soldering) :<\/h3>\n<ul data-start=\"2645\" data-end=\"2807\">\n<li data-start=\"2645\" data-end=\"2666\">\n<p data-start=\"2647\" data-end=\"2666\">Au SnAg, AuSn, In<\/p>\n<\/li>\n<li data-start=\"2667\" data-end=\"2726\">\n<p data-start=\"2669\" data-end=\"2726\">Utilis\u00e9 pour pi\u00e8ces critiques (micro-lentilles SAC\/FAC)<\/p>\n<\/li>\n<li data-start=\"2727\" data-end=\"2807\">\n<p data-start=\"2729\" data-end=\"2807\">Conduit \u00e0 un d\u00e9placement final pr\u00e9visible \u2192 compens\u00e9 dans l\u2019alignement initial<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2809\" data-end=\"2875\">\ud83d\udc49 La pi\u00e8ce reste fix\u00e9e \u00e0 \u00b11 \u00b5m m\u00eame quand elle chauffe \u00e0 40\u201350\u00b0C.<\/p>\n<h3 data-start=\"2882\" data-end=\"2944\">5) <strong data-start=\"2890\" data-end=\"2944\">Compensation thermique int\u00e9gr\u00e9e (mod\u00e9lisation FEM)<\/strong><\/h3>\n<p data-start=\"2945\" data-end=\"2972\">Les fabricants mod\u00e9lisent :<\/p>\n<ul data-start=\"2974\" data-end=\"3138\">\n<li data-start=\"2974\" data-end=\"3005\">\n<p data-start=\"2976\" data-end=\"3005\">dilatation locale du cuivre<\/p>\n<\/li>\n<li data-start=\"3006\" data-end=\"3069\">\n<p data-start=\"3008\" data-end=\"3069\">d\u00e9formation induite par le passage de 200\u2013300 W \u00e9lectriques<\/p>\n<\/li>\n<li data-start=\"3070\" data-end=\"3120\">\n<p data-start=\"3072\" data-end=\"3120\">coefficients thermiques du verre et des colles<\/p>\n<\/li>\n<li data-start=\"3121\" data-end=\"3138\">\n<p data-start=\"3123\" data-end=\"3138\">flux de chaleur<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3140\" data-end=\"3218\">Puis ils <strong data-start=\"3149\" data-end=\"3185\">alignent volontairement \u201c\u00e0 c\u00f4t\u00e9\u201d<\/strong> de la position id\u00e9ale pour que :<\/p>\n<p data-start=\"3220\" data-end=\"3304\">\u27a1\ufe0f <strong data-start=\"3223\" data-end=\"3258\">\u00e0 temp\u00e9rature de fonctionnement<\/strong>, tout se r\u00e9aligne <em data-start=\"3277\" data-end=\"3294\">automatiquement<\/em> \u00e0 1 \u00b5m.<\/p>\n<p data-start=\"3306\" data-end=\"3357\">C\u2019est crucial pour les modules pomp\u00e9s \u00e0 915\/976 nm.<\/p>\n<h3 data-start=\"3364\" data-end=\"3418\">\u00a06) <strong data-start=\"3372\" data-end=\"3418\">Pr\u00e9-alignement optique des micro-lentilles<\/strong><\/h3>\n<p data-start=\"3419\" data-end=\"3499\">Les blocs de micro-lentilles (les petites briques blanches dans ta photo) sont :<\/p>\n<ul data-start=\"3501\" data-end=\"3673\">\n<li data-start=\"3501\" data-end=\"3540\">\n<p data-start=\"3503\" data-end=\"3540\">usin\u00e9s en c\u00e9ramique ou verre fritt\u00e9<\/p>\n<\/li>\n<li data-start=\"3541\" data-end=\"3592\">\n<p data-start=\"3543\" data-end=\"3592\">avec une pr\u00e9cision typique de 1 \u00b5m sur 10\u201320 mm<\/p>\n<\/li>\n<li data-start=\"3593\" data-end=\"3624\">\n<p data-start=\"3595\" data-end=\"3624\">surfaces polies optiquement<\/p>\n<\/li>\n<li data-start=\"3625\" data-end=\"3673\">\n<p data-start=\"3627\" data-end=\"3673\">pos\u00e9s dans des si\u00e8ges usin\u00e9s \u00e0 la forme exacte<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3675\" data-end=\"3869\">\ud83d\udccc En usine :<br data-start=\"3688\" data-end=\"3691\" \/>Ils sont align\u00e9s une seule fois dans un jig tr\u00e8s pr\u00e9cis (contr\u00f4le cam\u00e9ra + faisceau t\u00e9moin).<br data-start=\"3783\" data-end=\"3786\" \/>Ensuite, ils sont ins\u00e9r\u00e9s comme des \u201cLego optiques\u201d dans ton module \u2192 d\u00e9j\u00e0 align\u00e9s.<\/p>\n<h3 data-start=\"3876\" data-end=\"3944\">\u00a07) <strong data-start=\"3884\" data-end=\"3944\">Cam\u00e9ras de vision industrielle + illumination collimat\u00e9e<\/strong><\/h3>\n<p data-start=\"3945\" data-end=\"4000\">Pour v\u00e9rifier les centroids des faisceaux, on utilise :<\/p>\n<ul data-start=\"4002\" data-end=\"4143\">\n<li data-start=\"4002\" data-end=\"4051\">\n<p data-start=\"4004\" data-end=\"4051\">cam\u00e9ra CMOS haute r\u00e9solution (0,5\u20131 \u00b5m\/pixel)<\/p>\n<\/li>\n<li data-start=\"4052\" data-end=\"4094\">\n<p data-start=\"4054\" data-end=\"4094\">illumination coaxiale (Schlieren, DIC)<\/p>\n<\/li>\n<li data-start=\"4095\" data-end=\"4143\">\n<p data-start=\"4097\" data-end=\"4143\">r\u00e9tro-injection par laser HeNe ou fibre t\u00e9moin<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"4145\" data-end=\"4219\">La cam\u00e9ra d\u00e9tecte l\u2019axe du faisceau ou son image \u2192 correction instantan\u00e9e.<\/p>\n<h3 data-start=\"4226\" data-end=\"4268\">\u00a08) <strong data-start=\"4234\" data-end=\"4268\">Alignement final avec la fibre<\/strong><\/h3>\n<p data-start=\"4269\" data-end=\"4317\">La fibre multimode (200\u2013400 \u00b5m) est mont\u00e9e sur :<\/p>\n<ul data-start=\"4319\" data-end=\"4406\">\n<li data-start=\"4319\" data-end=\"4344\">\n<p data-start=\"4321\" data-end=\"4344\">un micro-robot 6 axes<\/p>\n<\/li>\n<li data-start=\"4345\" data-end=\"4371\">\n<p data-start=\"4347\" data-end=\"4371\">un maintien \u00e0 v\u2013groove<\/p>\n<\/li>\n<li data-start=\"4372\" data-end=\"4406\">\n<p data-start=\"4374\" data-end=\"4406\">une ferrule align\u00e9e en tilt \u00b5rad<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"4408\" data-end=\"4597\">On maximise la puissance \u2192 puis on fixe la fibre par collage UV ou soudure laser.<br data-start=\"4489\" data-end=\"4492\" \/>La fibre est ensuite <strong data-start=\"4513\" data-end=\"4533\">tir\u00e9e l\u00e9g\u00e8rement<\/strong> (pr\u00e9-tension contr\u00f4l\u00e9e) pour compenser les dilatations futures.<\/p>\n<h3 data-start=\"4604\" data-end=\"4623\">\u00a0R\u00e9sultat final<\/h3>\n<p data-start=\"4624\" data-end=\"4660\">Gr\u00e2ce \u00e0 ces 8 techniques combin\u00e9es :<\/p>\n<ul data-start=\"4662\" data-end=\"4818\">\n<li data-start=\"4662\" data-end=\"4700\">\n<p data-start=\"4664\" data-end=\"4700\">Alignement transversal : <strong data-start=\"4689\" data-end=\"4698\">\u00b11 \u00b5m<\/strong><\/p>\n<\/li>\n<li data-start=\"4701\" data-end=\"4726\">\n<p data-start=\"4703\" data-end=\"4726\">Tilt : <strong data-start=\"4710\" data-end=\"4724\">\u00b13\u201310 \u00b5rad<\/strong><\/p>\n<\/li>\n<li data-start=\"4727\" data-end=\"4766\">\n<p data-start=\"4729\" data-end=\"4766\">Centrage sur la fibre : <strong data-start=\"4753\" data-end=\"4764\">\u00b11\u20132 \u00b5m<\/strong><\/p>\n<\/li>\n<li data-start=\"4767\" data-end=\"4818\">\n<p data-start=\"4769\" data-end=\"4818\">Stabilit\u00e9 thermique : &lt;1 \u00b5m d drift sur 20\u201340\u00b0C<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"4820\" data-end=\"4933\">\u27a1\ufe0f <strong data-start=\"4823\" data-end=\"4933\">C\u2019est ainsi qu\u2019on combine 18 faisceaux avec une pr\u00e9cision de microscope pour envoyer 260 W dans une fibre.<\/strong><\/p>\n<h3 data-start=\"303\" data-end=\"388\">1) <strong data-start=\"311\" data-end=\"388\">Le principe : une diode laser est command\u00e9e en COURANT, jamais en tension<\/strong><\/h3>\n<p data-start=\"390\" data-end=\"439\">Une diode laser est comme une LED tr\u00e8s sp\u00e9ciale :<\/p>\n<ul data-start=\"441\" data-end=\"601\">\n<li data-start=\"441\" data-end=\"506\">\n<p data-start=\"443\" data-end=\"506\">Sa tension typique est <strong data-start=\"466\" data-end=\"479\">1,7\u20132,2 V<\/strong> par \u00e9metteur (GaAs 915 nm)<\/p>\n<\/li>\n<li data-start=\"507\" data-end=\"543\">\n<p data-start=\"509\" data-end=\"543\">La tension est <strong data-start=\"524\" data-end=\"543\">peu informative<\/strong><\/p>\n<\/li>\n<li data-start=\"544\" data-end=\"601\">\n<p data-start=\"546\" data-end=\"601\">C\u2019est <strong data-start=\"552\" data-end=\"566\">le courant<\/strong> qui d\u00e9termine la puissance optique<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"603\" data-end=\"687\">\ud83d\udc49 Donc on utilise <strong data-start=\"622\" data-end=\"686\">des drivers de courant constants (LDD : Laser Diode Drivers)<\/strong>.<\/p>\n<h3 data-start=\"694\" data-end=\"767\">2) <strong data-start=\"701\" data-end=\"767\">Drivers laser haute puissance utilis\u00e9s dans les modules 915 nm<\/strong><\/h3>\n<p data-start=\"769\" data-end=\"820\">Un module 260 W avec 18 barres peut \u00eatre command\u00e9 :<\/p>\n<h3 data-start=\"822\" data-end=\"890\">\u2714\ufe0f <strong data-start=\"829\" data-end=\"888\">En s\u00e9rie interne (courant unique pour toutes les puces)<\/strong><\/h3>\n<p data-start=\"891\" data-end=\"998\">Courant typique : <strong data-start=\"909\" data-end=\"920\">20\u201340 A<\/strong><br data-start=\"920\" data-end=\"923\" \/>Tension totale : <strong data-start=\"940\" data-end=\"951\">20\u201340 V<\/strong><br data-start=\"951\" data-end=\"954\" \/>\u2192 Tr\u00e8s courant dans les modules industriels.<\/p>\n<h3 data-start=\"1000\" data-end=\"1075\">\u2714\ufe0f <strong data-start=\"1007\" data-end=\"1073\">En parall\u00e8le interne (rare, mais existe pour certaines stacks)<\/strong><\/h3>\n<p data-start=\"1076\" data-end=\"1130\">Courant plus \u00e9lev\u00e9, 60\u2013120 A<br data-start=\"1104\" data-end=\"1107\" \/>Tension faible (5\u201310 V)<\/p>\n<h3 data-start=\"1132\" data-end=\"1166\">\u2714\ufe0f Drivers de marque typique<\/h3>\n<ul data-start=\"1167\" data-end=\"1363\">\n<li data-start=\"1167\" data-end=\"1209\">\n<p data-start=\"1169\" data-end=\"1209\">Analog Modules (AM), mod\u00e8le 773 series<\/p>\n<\/li>\n<li data-start=\"1210\" data-end=\"1242\">\n<p data-start=\"1212\" data-end=\"1242\">Luminus \/ Arroyo Instruments<\/p>\n<\/li>\n<li data-start=\"1243\" data-end=\"1287\">\n<p data-start=\"1245\" data-end=\"1287\">Wavelength Electronics (LDx2200, LD1500)<\/p>\n<\/li>\n<li data-start=\"1288\" data-end=\"1317\">\n<p data-start=\"1290\" data-end=\"1317\">PicoLAS (LDD, LDP series)<\/p>\n<\/li>\n<li data-start=\"1318\" data-end=\"1363\">\n<p data-start=\"1320\" data-end=\"1363\">DEI, IXYS pour impulsionnel haute puissance<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1370\" data-end=\"1418\">\u00a03) <strong data-start=\"1378\" data-end=\"1418\">Courants de SEUIL et courants NOMAUX<\/strong><\/h3>\n<p data-start=\"1420\" data-end=\"1462\">Pour une diode 915 nm de haute puissance :<\/p>\n<h3 data-start=\"1464\" data-end=\"1499\">\u2714\ufe0f <strong data-start=\"1471\" data-end=\"1497\">Courant de seuil (I\u209c\u2095)<\/strong><\/h3>\n<ul data-start=\"1500\" data-end=\"1585\">\n<li data-start=\"1500\" data-end=\"1535\">\n<p data-start=\"1502\" data-end=\"1535\">Environ <strong data-start=\"1510\" data-end=\"1523\">0,8\u20131,2 A<\/strong> par barre<\/p>\n<\/li>\n<li data-start=\"1536\" data-end=\"1585\">\n<p data-start=\"1538\" data-end=\"1585\">Charge faible \u2192 la diode commence \u00e0 \u00ab las\u00e9rer \u00bb<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1587\" data-end=\"1615\">\u2714\ufe0f <strong data-start=\"1594\" data-end=\"1613\">Courant nominal<\/strong><\/h3>\n<ul data-start=\"1616\" data-end=\"1725\">\n<li data-start=\"1616\" data-end=\"1674\">\n<p data-start=\"1618\" data-end=\"1674\">8 \u00e0 14 A par barre (suivant la barre et la g\u00e9n\u00e9ration)<\/p>\n<\/li>\n<li data-start=\"1675\" data-end=\"1699\">\n<p data-start=\"1677\" data-end=\"1699\">Une bar 10 W : ~10 A<\/p>\n<\/li>\n<li data-start=\"1700\" data-end=\"1725\">\n<p data-start=\"1702\" data-end=\"1725\">Une bar 20 W : ~15\u201318 A<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1727\" data-end=\"1823\">Si ton module contient 18 barres :<br data-start=\"1761\" data-end=\"1764\" \/><strong data-start=\"1764\" data-end=\"1801\">Courant total typique = 20 \u00e0 40 A<\/strong> si tout est en s\u00e9rie.<\/p>\n<h3 data-start=\"1830\" data-end=\"1877\">4) <strong data-start=\"1838\" data-end=\"1875\">Efficacit\u00e9 (wall-plug efficiency)<\/strong><\/h3>\n<p data-start=\"1878\" data-end=\"1898\">C\u2019est le rapport :<\/p>\n<p data-start=\"4820\" data-end=\"4933\"><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\">\u03b7=PoptiquePe\u02calectrique\\eta = \\frac{P_{optique}}{P_{\u00e9lectrique}}<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">\u03b7<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"mord mathnormal\">P<\/span><span class=\"msupsub\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord accent mtight\"><span class=\"vlist-t\"><span class=\"mord mathnormal mtight\">e<\/span><span class=\"accent-body\">\u02ca<\/span><\/span><\/span><span class=\"mord mathnormal mtight\">l<\/span><span class=\"mord mathnormal mtight\">ec<\/span><span class=\"mord mathnormal mtight\">t<\/span><span class=\"mord mathnormal mtight\">r<\/span><span class=\"mord mathnormal mtight\">i<\/span><span class=\"mord mathnormal mtight\">q<\/span><span class=\"mord mathnormal mtight\">u<\/span><span class=\"mord mathnormal mtight\">e<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"mord mathnormal\">P<\/span><span class=\"msupsub\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">o<\/span><span class=\"mord mathnormal mtight\">pt<\/span><span class=\"mord mathnormal mtight\">i<\/span><span class=\"mord mathnormal mtight\">q<\/span><span class=\"mord mathnormal mtight\">u<\/span><span class=\"mord mathnormal mtight\">e<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p data-start=\"1949\" data-end=\"1962\">Typiquement :<\/p>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex w-fit flex-col-reverse\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"1964\" data-end=\"2130\">\n<thead data-start=\"1964\" data-end=\"1994\">\n<tr data-start=\"1964\" data-end=\"1994\">\n<th data-start=\"1964\" data-end=\"1980\" data-col-size=\"sm\">Type de diode<\/th>\n<th data-start=\"1980\" data-end=\"1994\" data-col-size=\"sm\">Efficacit\u00e9<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"2025\" data-end=\"2130\">\n<tr data-start=\"2025\" data-end=\"2055\">\n<td data-start=\"2025\" data-end=\"2044\" data-col-size=\"sm\">808 nm anciennes<\/td>\n<td data-start=\"2044\" data-end=\"2055\" data-col-size=\"sm\">40\u201345 %<\/td>\n<\/tr>\n<tr data-start=\"2056\" data-end=\"2100\">\n<td data-start=\"2056\" data-end=\"2085\" data-col-size=\"sm\">915\/940 nm haute puissance<\/td>\n<td data-start=\"2085\" data-end=\"2100\" data-col-size=\"sm\"><strong data-start=\"2087\" data-end=\"2098\">50\u201360 %<\/strong><\/td>\n<\/tr>\n<tr data-start=\"2101\" data-end=\"2130\">\n<td data-start=\"2101\" data-end=\"2119\" data-col-size=\"sm\">976 nm modernes<\/td>\n<td data-start=\"2119\" data-end=\"2130\" data-col-size=\"sm\">55\u201365 %<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p data-start=\"2132\" data-end=\"2161\">Exemple pour 260 W optiques :<\/p>\n<ul data-start=\"2163\" data-end=\"2241\">\n<li data-start=\"2163\" data-end=\"2194\">\n<p data-start=\"2165\" data-end=\"2194\">Driver = ~500 W \u00e9lectriques<\/p>\n<\/li>\n<li data-start=\"2195\" data-end=\"2241\">\n<p data-start=\"2197\" data-end=\"2241\">Temp\u00e9rature contr\u00f4l\u00e9e = meilleure efficacit\u00e9<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"2248\" data-end=\"2295\">5) <strong data-start=\"2256\" data-end=\"2295\">Le driver doit G\u00c9RER la temp\u00e9rature<\/strong><\/h3>\n<p data-start=\"2297\" data-end=\"2364\">Les diodes 915 nm changent de longueur d\u2019onde avec la temp\u00e9rature :<\/p>\n<ul data-start=\"2366\" data-end=\"2460\">\n<li data-start=\"2366\" data-end=\"2382\">\n<p data-start=\"2368\" data-end=\"2382\">~0,3 nm \/ \u00b0C<\/p>\n<\/li>\n<li data-start=\"2383\" data-end=\"2460\">\n<p data-start=\"2385\" data-end=\"2460\">Pour pompage : <strong data-start=\"2400\" data-end=\"2425\">\u03bb doit rester align\u00e9e<\/strong> avec l\u2019absorption du cristal\/fibre<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2462\" data-end=\"2516\">Donc le driver travaille <strong data-start=\"2487\" data-end=\"2514\">avec le refroidissement<\/strong> :<\/p>\n<p data-start=\"2518\" data-end=\"2644\">\ud83d\udd39 R\u00e9gulation de temp\u00e9rature par water cooling<br data-start=\"2564\" data-end=\"2567\" \/>\ud83d\udd39 Sonde NTC sous chaque barre<br data-start=\"2597\" data-end=\"2600\" \/>\ud83d\udd39 Limites de temp\u00e9rature max (70\u201380\u00b0C puce)<\/p>\n<h3 data-start=\"2651\" data-end=\"2696\">6) Protections ABSOLUMENT indispensables<\/h3>\n<p data-start=\"2698\" data-end=\"2791\">Une diode laser peut \u00eatre d\u00e9truite en <strong data-start=\"2736\" data-end=\"2752\">nanosecondes<\/strong>.<br data-start=\"2753\" data-end=\"2756\" \/>Donc les modules doivent int\u00e9grer :<\/p>\n<h3 data-start=\"2793\" data-end=\"2816\">\u2714\ufe0f Protection ESD<\/h3>\n<blockquote data-start=\"2817\" data-end=\"2878\">\n<p data-start=\"2819\" data-end=\"2878\">Une simple d\u00e9charge \u00e9lectrostatique peut tuer une bar 20 W.<\/p>\n<\/blockquote>\n<h3 data-start=\"2880\" data-end=\"2922\">\u2714\ufe0f Protection contre les SURCURRENTS<\/h3>\n<p data-start=\"2923\" data-end=\"2951\">Driver avec limite <strong data-start=\"2942\" data-end=\"2950\">Imax<\/strong>.<\/p>\n<h3 data-start=\"2953\" data-end=\"3004\">\u2714\ufe0f Soft-start (mont\u00e9e progressive sur 5\u2013100 ms)<\/h3>\n<h3 data-start=\"3006\" data-end=\"3052\">\u2714\ufe0f Protection contre \u00ab back-reflection \u00bb<\/h3>\n<p data-start=\"3053\" data-end=\"3107\">Retour optique trop fort \u2192 d\u00e9gradation catastrophique.<\/p>\n<h3 data-start=\"3109\" data-end=\"3140\">\u2714\ufe0f Protection temp\u00e9rature<\/h3>\n<p data-start=\"3141\" data-end=\"3178\">Si T\u00b0 &gt; limite \u2192 coupure automatique.<\/p>\n<h3 data-start=\"3180\" data-end=\"3218\">\u2714\ufe0f Protection open\/short circuit<\/h3>\n<p data-start=\"3219\" data-end=\"3274\">Si la fibre se d\u00e9connecte ou faisceau bloqu\u00e9 \u2192 coupure.<\/p>\n<h3 data-start=\"3281\" data-end=\"3326\">7) <strong data-start=\"3289\" data-end=\"3326\">Monitoring : photodiodes internes<\/strong><\/h3>\n<p data-start=\"3328\" data-end=\"3354\">Dans beaucoup de modules :<\/p>\n<ul data-start=\"3356\" data-end=\"3475\">\n<li data-start=\"3356\" data-end=\"3416\">\n<p data-start=\"3358\" data-end=\"3416\">Une photodiode interne mesure une fraction de la lumi\u00e8re<\/p>\n<\/li>\n<li data-start=\"3417\" data-end=\"3475\">\n<p data-start=\"3419\" data-end=\"3475\">Permet de faire un <strong data-start=\"3438\" data-end=\"3475\">feedback sur la puissance optique<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3477\" data-end=\"3540\">Mais <em data-start=\"3482\" data-end=\"3518\">dans les modules hautes puissances<\/em>, on utilise souvent :<\/p>\n<ul data-start=\"3542\" data-end=\"3614\">\n<li data-start=\"3542\" data-end=\"3569\">\n<p data-start=\"3544\" data-end=\"3569\">un <strong data-start=\"3547\" data-end=\"3567\">moniteur externe<\/strong><\/p>\n<\/li>\n<li data-start=\"3570\" data-end=\"3614\">\n<p data-start=\"3572\" data-end=\"3614\">cam\u00e9ra + capteurs pour surveiller la fibre<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3616\" data-end=\"3671\">Parce que la photodiode interne sature au-del\u00e0 de 10 W.<\/p>\n<h3 data-start=\"3678\" data-end=\"3719\">8) Modes de fonctionnement du driver<\/h3>\n<h3 data-start=\"3721\" data-end=\"3744\">\u2714\ufe0f Mode CW (continu)<\/h3>\n<p data-start=\"3745\" data-end=\"3795\">Le plus utilis\u00e9 pour pomper Yb:YAG, Nd:YAG, fibre.<\/p>\n<ul data-start=\"3797\" data-end=\"3863\">\n<li data-start=\"3797\" data-end=\"3832\">\n<p data-start=\"3799\" data-end=\"3832\">Courant stable \u2192 puissance stable<\/p>\n<\/li>\n<li data-start=\"3833\" data-end=\"3863\">\n<p data-start=\"3835\" data-end=\"3863\">Le driver stabilise I \u00b10,1 %<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"3865\" data-end=\"3911\">\u2714\ufe0f Mode Allumage\/Extinction (TTL ou analog)<\/h3>\n<p data-start=\"3912\" data-end=\"3934\">Fr\u00e9quence possible :<\/p>\n<ul data-start=\"3935\" data-end=\"4040\">\n<li data-start=\"3935\" data-end=\"3960\">\n<p data-start=\"3937\" data-end=\"3960\">TTL : jusqu\u2019\u00e0 200 kHz<\/p>\n<\/li>\n<li data-start=\"3961\" data-end=\"3988\">\n<p data-start=\"3963\" data-end=\"3988\">Analog : 50 kHz typique<\/p>\n<\/li>\n<li data-start=\"3989\" data-end=\"4040\">\n<p data-start=\"3991\" data-end=\"4040\">Pulse shape raide \u2192 pilotage direct du gain laser<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"4042\" data-end=\"4081\">\u2714\ufe0f Mode impulsionnel haute puissance<\/h3>\n<p data-start=\"4082\" data-end=\"4116\">Avec modules LDP (PicoLAS \/ DEI) :<\/p>\n<ul data-start=\"4117\" data-end=\"4194\">\n<li data-start=\"4117\" data-end=\"4137\">\n<p data-start=\"4119\" data-end=\"4137\">Courants 100\u2013300 A<\/p>\n<\/li>\n<li data-start=\"4138\" data-end=\"4156\">\n<p data-start=\"4140\" data-end=\"4156\">Pulses 10\u2013500 ns<\/p>\n<\/li>\n<li data-start=\"4157\" data-end=\"4194\">\n<p data-start=\"4159\" data-end=\"4194\">Utilis\u00e9s pour lidar, pumping puls\u00e9.<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"4201\" data-end=\"4259\">9) Tension typique pour une diode 915 nm de puissance<\/h3>\n<ul data-start=\"4261\" data-end=\"4321\">\n<li data-start=\"4261\" data-end=\"4284\">\n<p data-start=\"4263\" data-end=\"4284\">1,8\u20132,2 V par barre<\/p>\n<\/li>\n<li data-start=\"4285\" data-end=\"4321\">\n<p data-start=\"4287\" data-end=\"4321\">En s\u00e9rie (18 barres) \u2192 <strong data-start=\"4310\" data-end=\"4321\">30\u201336 V<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"4323\" data-end=\"4370\">La tension augmente l\u00e9g\u00e8rement avec le courant.<\/p>\n<h3 data-start=\"4377\" data-end=\"4442\">10) Courbe L-I-V typique (Laser power vs current vs voltage)<\/h3>\n<h3 data-start=\"4444\" data-end=\"4496\">1) En dessous de I\u209c\u2095 \u2192 sortie LED, quelques mW<\/h3>\n<h3 data-start=\"4497\" data-end=\"4544\">2) Au-dessus du seuil \u2192 croissance lin\u00e9aire<\/h3>\n<p data-start=\"4546\" data-end=\"4558\">En g\u00e9n\u00e9ral :<\/p>\n<p data-start=\"3616\" data-end=\"3671\"><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\">P=\u03b7\u2009(I\u2212Ith)P = \\eta\\,(I &#8211; I_{th}) <\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">P<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord mathnormal\">\u03b7<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">I<\/span><span class=\"mbin\">\u2212<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">I<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">t<\/span><span class=\"mord mathnormal mtight\">h<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span><\/p>\n<p data-start=\"4591\" data-end=\"4675\">Avec \u03b7 = ~1 W\/A pour une barre 10 W<br data-start=\"4626\" data-end=\"4629\" \/>ou ~1,2\u20131,5 W\/A pour les barres 20 W modernes.<\/p>\n<h3 data-start=\"4682\" data-end=\"4727\">11) Exemple concret pour un module 260 W<\/h3>\n<p data-start=\"4729\" data-end=\"4763\">Supposons 18 barres 15 W chacune :<\/p>\n<h3 data-start=\"4765\" data-end=\"4790\">Param\u00e8tres typiques :<\/h3>\n<ul data-start=\"4791\" data-end=\"4997\">\n<li data-start=\"4791\" data-end=\"4811\">\n<p data-start=\"4793\" data-end=\"4811\"><span class=\"katex\"><span class=\"katex-mathml\">IthI_{th}<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">I<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">t<\/span><span class=\"mord mathnormal mtight\">h<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u2248 1 A<\/p>\n<\/li>\n<li data-start=\"4812\" data-end=\"4836\">\n<p data-start=\"4814\" data-end=\"4836\"><span class=\"katex\"><span class=\"katex-mathml\">IopI_{op}<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">I<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">o<\/span><span class=\"mord mathnormal mtight\">p<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u2248 10\u201312 A<\/p>\n<\/li>\n<li data-start=\"4837\" data-end=\"4873\">\n<p data-start=\"4839\" data-end=\"4873\">Driver total : 20\u201330 A @ 30\u201340 V<\/p>\n<\/li>\n<li data-start=\"4874\" data-end=\"4910\">\n<p data-start=\"4876\" data-end=\"4910\">Montage en s\u00e9rie = commande simple<\/p>\n<\/li>\n<li data-start=\"4911\" data-end=\"4947\">\n<p data-start=\"4913\" data-end=\"4947\">Puissance \u00e9lectrique \u2248 450\u2013500 W<\/p>\n<\/li>\n<li data-start=\"4948\" data-end=\"4977\">\n<p data-start=\"4950\" data-end=\"4977\">Puissance optique \u2248 260 W<\/p>\n<\/li>\n<li data-start=\"4978\" data-end=\"4997\">\n<p data-start=\"4980\" data-end=\"4997\">\u00c9fficacit\u00e9 \u2248 55 %<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"5004\" data-end=\"5050\">12) Comment piloter le module en pratique<\/h3>\n<h3 data-start=\"5052\" data-end=\"5072\">Schema g\u00e9n\u00e9ral :<\/h3>\n<div class=\"contain-inline-size rounded-2xl corner-superellipse\/1.1 relative bg-token-sidebar-surface-primary\">\n<div class=\"sticky top-9\">\n<div class=\"absolute end-0 bottom-0 flex h-9 items-center pe-2\">\n<div class=\"bg-token-bg-elevated-secondary text-token-text-secondary flex items-center gap-4 rounded-sm px-2 font-sans text-xs\"><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"whitespace-pre!\">Alim DC <span class=\"hljs-punctuation\">-&gt;<\/span> Driver laser constant-current <span class=\"hljs-punctuation\">-&gt;<\/span> Module diode <span class=\"hljs-punctuation\">-&gt;<\/span> Fibre\/cible<br \/>\n<\/code><\/div>\n<\/div>\n<h3 data-start=\"5154\" data-end=\"5177\">\u00c9tapes d\u2019allumage :<\/h3>\n<ol data-start=\"5178\" data-end=\"5371\">\n<li data-start=\"5178\" data-end=\"5210\">\n<p data-start=\"5181\" data-end=\"5210\">V\u00e9rifier refroidissement OK<\/p>\n<\/li>\n<li data-start=\"5211\" data-end=\"5243\">\n<p data-start=\"5214\" data-end=\"5243\">Activer driver (soft-start)<\/p>\n<\/li>\n<li data-start=\"5244\" data-end=\"5276\">\n<p data-start=\"5247\" data-end=\"5276\">Monter lentement le courant<\/p>\n<\/li>\n<li data-start=\"5277\" data-end=\"5306\">\n<p data-start=\"5280\" data-end=\"5306\">Stabiliser la photodiode<\/p>\n<\/li>\n<li data-start=\"5307\" data-end=\"5334\">\n<p data-start=\"5310\" data-end=\"5334\">Bloquer le courant max<\/p>\n<\/li>\n<li data-start=\"5335\" data-end=\"5371\">\n<p data-start=\"5338\" data-end=\"5371\">Surveiller temp\u00e9rature en continu<\/p>\n<h3 data-start=\"326\" data-end=\"419\">1) R\u00e8gle d\u2019or : on pilote une diode par <strong data-start=\"368\" data-end=\"388\">courant constant<\/strong> (driver CC), pas par tension<\/h3>\n<p data-start=\"420\" data-end=\"757\">Tu veux une source qui d\u00e9livre un <strong data-start=\"454\" data-end=\"474\">courant constant<\/strong> s\u00fbr, avec soft-start, limites, interlocks et monitoring. Les alimentations labo classiques peuvent fonctionner mais <strong data-start=\"591\" data-end=\"616\">un driver laser d\u00e9di\u00e9<\/strong> (ou une alim + module de contr\u00f4le laser) est fortement pr\u00e9f\u00e9rable pour la protection et la modulation. <span class=\"\" data-state=\"closed\"><span class=\"ms-1 inline-flex max-w-full items-center relative top-&#091;-0.094rem&#093; animate-&#091;show_150ms_ease-in&#093;\" data-testid=\"webpage-citation-pill\"><a class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-&#091;9px&#093; font-medium transition-colors duration-150 ease-in-out text-token-text-secondary! bg-&#091;#F4F4F4&#093;! dark:bg-&#091;#303030&#093;!\" href=\"https:\/\/www.laserdiodecontrol.com\/laser-diode-drivers-current-sources\/shop\/High-Power?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\"><span class=\"relative start-0 bottom-0 flex h-full w-full items-center\"><span class=\"flex h-4 w-full items-center justify-between\"><span class=\"max-w-&#091;15ch&#093; grow truncate overflow-hidden text-center\">Laser Diode Control<\/span><span class=\"-me-1 flex h-full items-center rounded-full px-1 text-&#091;#8F8F8F&#093;\">+1<\/span><\/span><\/span><\/a><\/span><\/span><\/p>\n<h3 data-start=\"764\" data-end=\"834\">2) Quelle puissance \/ tension \/ courant viser (valeur de conception)<\/h3>\n<p data-start=\"836\" data-end=\"906\">Hypoth\u00e8ses r\u00e9alistes (bas\u00e9es sur les valeurs discut\u00e9es pr\u00e9c\u00e9demment) :<\/p>\n<ul data-start=\"908\" data-end=\"1173\">\n<li data-start=\"908\" data-end=\"971\">\n<p data-start=\"910\" data-end=\"971\">tension par barre \u2248 <strong data-start=\"930\" data-end=\"943\">1.8\u20132.2 V<\/strong> \u2192 prenons <strong data-start=\"954\" data-end=\"969\">2.0 V\/barre<\/strong><\/p>\n<\/li>\n<li data-start=\"972\" data-end=\"1046\">\n<p data-start=\"974\" data-end=\"1046\">18 barres en <strong data-start=\"987\" data-end=\"996\">s\u00e9rie<\/strong> (architecture commune) \u2192 <span class=\"katex\"><span class=\"katex-mathml\">VtotV_{tot}<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">V<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">t<\/span><span class=\"mord mathnormal mtight\">o<\/span><span class=\"mord mathnormal mtight\">t<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u2248 <strong data-start=\"1036\" data-end=\"1044\">36 V<\/strong><\/p>\n<\/li>\n<li data-start=\"1047\" data-end=\"1173\">\n<p data-start=\"1049\" data-end=\"1173\">courant par barre pour ~260 W total (\u00e0 ~55 % WPE) \u2248 <strong data-start=\"1101\" data-end=\"1109\">13 A<\/strong> (ex. 13 A \u00d7 36 V \u2248 468 W \u00e9lectrique \u2192 ~260 W optique \u00e0 55 %).<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1175\" data-end=\"1497\">Donc objectif pratique :<br data-start=\"1199\" data-end=\"1202\" \/><strong data-start=\"1202\" data-end=\"1276\">Alimentation\/driver programmable CC capable d\u2019environ 0\u201360 V et 0\u201330 A<\/strong>, puissance utile \u2265 <strong data-start=\"1296\" data-end=\"1305\">600 W<\/strong> (marge thermique + pertes, headroom pour s\u00fbret\u00e9).<br data-start=\"1355\" data-end=\"1358\" \/>(Si ton module est c\u00e2bl\u00e9 diff\u00e9remment \u2014 sections en parall\u00e8le \u2014 les chiffres changent : je donne aussi options plus haut\/bas ci-dessous.)<\/p>\n<h3 data-start=\"1504\" data-end=\"1584\">3) Option A \u2014 meilleure pratique : <strong data-start=\"1541\" data-end=\"1582\">driver laser d\u00e9di\u00e9 (courant constant)<\/strong><\/h3>\n<p data-start=\"1585\" data-end=\"1760\">Avantages : protections sp\u00e9cifiques (reverse, overshoot, soft-start), interface modulation analog\/TTL, surveillance courant\/power, meilleure stabilit\u00e9 et s\u00e9curit\u00e9 pour diodes.<\/p>\n<p data-start=\"1762\" data-end=\"2092\">Exemples de fabricants\/produits : PicoLAS (s\u00e9ries LDP-CW \/ LDP-QCW), Meerstetter, Lumina\/Analog Modules. Ces drivers existent en versions CW capables de dizaines d\u2019amp\u00e8res et en versions QCW\/impulsionnelles pour courant tr\u00e8s \u00e9lev\u00e9. Ils int\u00e8grent protections et sorties de monitoring adapt\u00e9es. <span class=\"\" data-state=\"closed\"><span class=\"ms-1 inline-flex max-w-full items-center relative top-&#091;-0.094rem&#093; animate-&#091;show_150ms_ease-in&#093;\" data-testid=\"webpage-citation-pill\"><a class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-&#091;9px&#093; font-medium transition-colors duration-150 ease-in-out text-token-text-secondary! bg-&#091;#F4F4F4&#093;! dark:bg-&#091;#303030&#093;!\" href=\"https:\/\/www.picolas.de\/en\/produkt-kategorie\/high-power-driver-en\/?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\"><span class=\"relative start-0 bottom-0 flex h-full w-full items-center\"><span class=\"flex h-4 w-full items-center justify-between\"><span class=\"max-w-&#091;15ch&#093; grow truncate overflow-hidden text-center\">picolas.de<\/span><span class=\"-me-1 flex h-full items-center rounded-full px-1 text-&#091;#8F8F8F&#093;\">+2<\/span><\/span><span class=\"flex h-4 w-full items-center justify-between absolute\"><span class=\"max-w-&#091;15ch&#093; grow truncate overflow-hidden text-center\">meerstetter.ch<\/span><span class=\"-me-1 flex h-full items-center rounded-full px-1 text-&#091;#8F8F8F&#093;\">+2<\/span><\/span><\/span><\/a><\/span><\/span><\/p>\n<p data-start=\"2094\" data-end=\"2328\">Recommandation concr\u00e8te : un driver CW programmable capable de <strong data-start=\"2157\" data-end=\"2166\">\u226540 A<\/strong> \/ <strong data-start=\"2169\" data-end=\"2178\">&gt;50 V<\/strong> ou une combinaison de drivers (si besoin), p.ex. PicoLAS LDP-CW (gamme disponible en 50 A, 120 A selon mod\u00e8le). <span class=\"\" data-state=\"closed\"><span class=\"ms-1 inline-flex max-w-full items-center relative top-&#091;-0.094rem&#093; animate-&#091;show_150ms_ease-in&#093;\" data-testid=\"webpage-citation-pill\"><a class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-&#091;9px&#093; font-medium transition-colors duration-150 ease-in-out text-token-text-secondary! bg-&#091;#F4F4F4&#093;! dark:bg-&#091;#303030&#093;!\" href=\"https:\/\/www.picolas.de\/en\/produkt\/ldp-cw-50-05\/?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\"><span class=\"relative start-0 bottom-0 flex h-full w-full items-center\"><span class=\"flex h-4 w-full items-center justify-between\"><span class=\"max-w-&#091;15ch&#093; grow truncate overflow-hidden text-center\">picolas.de<\/span><span class=\"-me-1 flex h-full items-center rounded-full px-1 text-&#091;#8F8F8F&#093;\">+1<\/span><\/span><\/span><\/a><\/span><\/span><\/p>\n<h3 data-start=\"2335\" data-end=\"2418\">4) Option B \u2014 alim DC programmable + contr\u00f4leur laser (si budget \/ int\u00e9gration)<\/h3>\n<p data-start=\"2419\" data-end=\"2834\">Tu peux aussi utiliser une <strong data-start=\"2446\" data-end=\"2481\">alimentation DC programmable CC<\/strong> (puissante) et la piloter par un <strong data-start=\"2515\" data-end=\"2543\">module de contr\u00f4le laser<\/strong> (pour soft-start, mesure, interlocks). Cette solution marche mais n\u00e9cessite que l\u2019alim ait des caract\u00e9ristiques \u00ab friendly laser \u00bb : faible ripple, remote sense, r\u00e9ponse dynamique correcte, et surtout la possibilit\u00e9 d\u2019\u00eatre utilis\u00e9e en mode CC strict (ou coupl\u00e9e \u00e0 un contr\u00f4leur de courant).<\/p>\n<p data-start=\"2836\" data-end=\"2879\">Exemples d\u2019alims industrielles adapt\u00e9es :<\/p>\n<ul data-start=\"2880\" data-end=\"3266\">\n<li data-start=\"2880\" data-end=\"2994\">\n<p data-start=\"2882\" data-end=\"2994\">Keysight N8737A \u2014 60 V \/ 55 A \/ 3.3 kW (instrument haut de gamme, rack). <span class=\"\" data-state=\"closed\"><span class=\"ms-1 inline-flex max-w-full items-center relative top-&#091;-0.094rem&#093; animate-&#091;show_150ms_ease-in&#093;\" data-testid=\"webpage-citation-pill\"><a class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-&#091;9px&#093; font-medium transition-colors duration-150 ease-in-out text-token-text-secondary! bg-&#091;#F4F4F4&#093;! dark:bg-&#091;#303030&#093;!\" href=\"https:\/\/www.keysight.com\/us\/en\/product\/N8737A\/power-supply-60v-55a-3300w.html?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\"><span class=\"relative start-0 bottom-0 flex h-full w-full items-center\"><span class=\"flex h-4 w-full items-center justify-between overflow-hidden\"><span class=\"max-w-&#091;15ch&#093; grow truncate overflow-hidden text-center\">Keysight<\/span><\/span><\/span><\/a><\/span><\/span><\/p>\n<\/li>\n<li data-start=\"2995\" data-end=\"3131\">\n<p data-start=\"2997\" data-end=\"3131\">TDK-Lambda GEN \/ GENESYS (s\u00e9rie avec 60 V \/ 12.5\u201325 A variants, et modules 2U \u00e0 plusieurs kW). <span class=\"\" data-state=\"closed\"><span class=\"ms-1 inline-flex max-w-full items-center relative top-&#091;-0.094rem&#093; animate-&#091;show_150ms_ease-in&#093;\" data-testid=\"webpage-citation-pill\"><a class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-&#091;9px&#093; font-medium transition-colors duration-150 ease-in-out text-token-text-secondary! bg-&#091;#F4F4F4&#093;! dark:bg-&#091;#303030&#093;!\" href=\"https:\/\/product.tdk.com\/en\/search\/power\/switching-power\/prg-power\/info?part_no=GENH60-12.5&amp;utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\"><span class=\"relative start-0 bottom-0 flex h-full w-full items-center\"><span class=\"flex h-4 w-full items-center justify-between\"><span class=\"max-w-&#091;15ch&#093; grow truncate overflow-hidden text-center\">product.tdk.com<\/span><span class=\"-me-1 flex h-full items-center rounded-full px-1 text-&#091;#8F8F8F&#093;\">+1<\/span><\/span><\/span><\/a><\/span><\/span><\/p>\n<\/li>\n<li data-start=\"3132\" data-end=\"3266\">\n<p data-start=\"3134\" data-end=\"3266\">Delta Elektronika SM \/ SM6000 \u2014 s\u00e9ries con\u00e7ues pour lasers\/plasma, bonnes r\u00e9ponses dynamiques. <span class=\"\" data-state=\"closed\"><span class=\"ms-1 inline-flex max-w-full items-center relative top-&#091;-0.094rem&#093; animate-&#091;show_150ms_ease-in&#093;\" data-testid=\"webpage-citation-pill\"><a class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-&#091;9px&#093; font-medium transition-colors duration-150 ease-in-out text-token-text-secondary! bg-&#091;#F4F4F4&#093;! dark:bg-&#091;#303030&#093;!\" href=\"https:\/\/www.deltaelektronika.com\/products\/sm6000-series?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\"><span class=\"relative start-0 bottom-0 flex h-full w-full items-center\"><span class=\"flex h-4 w-full items-center justify-between\"><span class=\"max-w-&#091;15ch&#093; grow truncate overflow-hidden text-center\">deltaelektronika.com<\/span><span class=\"-me-1 flex h-full items-center rounded-full px-1 text-&#091;#8F8F8F&#093;\">+1<\/span><\/span><\/span><\/a><\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3268\" data-end=\"3430\">Si tu choisis cette voie : <strong data-start=\"3295\" data-end=\"3309\">privil\u00e9gie<\/strong> un bloc 0\u201360 V \/ 0\u201330\u201350 A, puissance nominale \u2265 600 W et faible ripple (voir \u00a75). <span class=\"\" data-state=\"closed\"><span class=\"ms-1 inline-flex max-w-full items-center relative top-&#091;-0.094rem&#093; animate-&#091;show_150ms_ease-in&#093;\" data-testid=\"webpage-citation-pill\"><a class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-&#091;9px&#093; font-medium transition-colors duration-150 ease-in-out text-token-text-secondary! bg-&#091;#F4F4F4&#093;! dark:bg-&#091;#303030&#093;!\" href=\"https:\/\/www.emea.lambda.tdk.com\/fr\/products\/genesys-2u?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\"><span class=\"relative start-0 bottom-0 flex h-full w-full items-center\"><span class=\"flex h-4 w-full items-center justify-between overflow-hidden\"><span class=\"max-w-&#091;15ch&#093; grow truncate overflow-hidden text-center\">emea.lambda.tdk.com<\/span><\/span><\/span><\/a><\/span><\/span><\/p>\n<h3 data-start=\"3437\" data-end=\"3487\">5) Sp\u00e9cifications techniques \u00e0 exiger (crit\u00e8res)<\/h3>\n<ol data-start=\"3489\" data-end=\"4613\">\n<li data-start=\"3571\" data-end=\"3633\">\n<p data-start=\"3574\" data-end=\"3633\"><strong data-start=\"3574\" data-end=\"3594\">Plage de tension<\/strong> \u2265 0\u201360 V (pour couvrir Vf et marge).<\/p>\n<\/li>\n<li data-start=\"3634\" data-end=\"3691\">\n<p data-start=\"3637\" data-end=\"3691\"><strong data-start=\"3637\" data-end=\"3657\">Plage de courant<\/strong> \u2265 0\u201330\u201350 A selon architecture.<\/p>\n<\/li>\n<li data-start=\"3692\" data-end=\"3755\">\n<p data-start=\"3695\" data-end=\"3755\"><strong data-start=\"3695\" data-end=\"3717\">Puissance nominale<\/strong> \u2265 600 W (pr\u00e9voir 20\u201350 % de marge).<\/p>\n<\/li>\n<li data-start=\"3756\" data-end=\"4060\">\n<p data-start=\"3759\" data-end=\"4060\"><strong data-start=\"3759\" data-end=\"3777\">Ripple &amp; noise<\/strong> : chercher <em data-start=\"3789\" data-end=\"3815\">faible ripple en courant<\/em> \u2014 id\u00e9alement &lt; 0,5\u20131 % du courant nominal ou &lt;10\u201320 mA pour 10\u201320 A (certains bench supplies annoncent mArms). Les specs typiques de l\u2019alimentation doivent \u00eatre compatibles avec la sensibilit\u00e9 des diodes. <span class=\"\" data-state=\"closed\"><span class=\"ms-1 inline-flex max-w-full items-center relative top-&#091;-0.094rem&#093; animate-&#091;show_150ms_ease-in&#093;\" data-testid=\"webpage-citation-pill\"><a class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-&#091;9px&#093; font-medium transition-colors duration-150 ease-in-out text-token-text-secondary! bg-&#091;#F4F4F4&#093;! dark:bg-&#091;#303030&#093;!\" href=\"https:\/\/product.tdk.com\/en\/search\/power\/switching-power\/prg-power\/info?part_no=GENH60-12.5&amp;utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\"><span class=\"relative start-0 bottom-0 flex h-full w-full items-center\"><span class=\"flex h-4 w-full items-center justify-between\"><span class=\"max-w-&#091;15ch&#093; grow truncate overflow-hidden text-center\">product.tdk.com<\/span><span class=\"-me-1 flex h-full items-center rounded-full px-1 text-&#091;#8F8F8F&#093;\">+1<\/span><\/span><\/span><\/a><\/span><\/span><\/p>\n<\/li>\n<li data-start=\"4061\" data-end=\"4157\">\n<p data-start=\"4064\" data-end=\"4157\"><strong data-start=\"4064\" data-end=\"4080\">Remote sense<\/strong> (compensation de chute de ligne), Kelvin sensing pour le sense de courant.<\/p>\n<\/li>\n<li data-start=\"4158\" data-end=\"4273\">\n<p data-start=\"4161\" data-end=\"4273\"><strong data-start=\"4161\" data-end=\"4186\">Interface de commande<\/strong> : analog TTL, USB\/Ethernet\/GPIB pour int\u00e9gration, sortie monitoring courant\/tension.<\/p>\n<\/li>\n<li data-start=\"4274\" data-end=\"4452\">\n<p data-start=\"4277\" data-end=\"4452\"><strong data-start=\"4277\" data-end=\"4306\">Soft-start \/ slew control<\/strong> (limiter dv\/dt et di\/dt) pour \u00e9viter overshoot mortel. Les drivers laser d\u00e9di\u00e9s proposent \u00e7a en standard. <span class=\"\" data-state=\"closed\"><span class=\"ms-1 inline-flex max-w-full items-center relative top-&#091;-0.094rem&#093; animate-&#091;show_150ms_ease-in&#093;\" data-testid=\"webpage-citation-pill\"><a class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-&#091;9px&#093; font-medium transition-colors duration-150 ease-in-out text-token-text-secondary! bg-&#091;#F4F4F4&#093;! dark:bg-&#091;#303030&#093;!\" href=\"https:\/\/www.lasercomponents.com\/fileadmin\/user_upload\/home\/Datasheets\/picolas\/ldp-c_50-05-driver.pdf?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\"><span class=\"relative start-0 bottom-0 flex h-full w-full items-center\"><span class=\"flex h-4 w-full items-center justify-between overflow-hidden\"><span class=\"max-w-&#091;15ch&#093; grow truncate overflow-hidden text-center\">Laser Components<\/span><\/span><\/span><\/a><\/span><\/span><\/p>\n<\/li>\n<li data-start=\"4453\" data-end=\"4550\">\n<p data-start=\"4456\" data-end=\"4550\"><strong data-start=\"4456\" data-end=\"4471\">Protections<\/strong> : OVP\/ OCP \/ OPP \/ overtemp \/ interlock (ch\u00e2ssis\/fibre), protection reverse.<\/p>\n<\/li>\n<li data-start=\"4551\" data-end=\"4613\">\n<p data-start=\"4555\" data-end=\"4613\"><strong data-start=\"4555\" data-end=\"4579\">Isolation galvanique<\/strong> et bonne mise \u00e0 la terre syst\u00e8me<\/p>\n<article class=\"text-token-text-primary w-full focus:outline-none &#091;--shadow-height:45px&#093; has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) &#091;&amp;:has(&#091;data-writing-block&#093;)&gt;*&#093;:pointer-events-auto &#091;content-visibility:auto&#093; supports-&#091;content-visibility:auto&#093;:&#091;contain-intrinsic-size:auto_100lvh&#093; scroll-mt-&#091;calc(var(--header-height)+min(200px,max(70px,20svh)))&#093;\" dir=\"auto\" tabindex=\"-1\" data-turn-id=\"ee7f7a8f-5d56-43c7-bb00-125bdfdf769a\" data-testid=\"conversation-turn-12\" data-scroll-anchor=\"false\" data-turn=\"assistant\">\n<div class=\"text-base my-auto mx-auto &#091;--thread-content-margin:--spacing(4)&#093; @w-sm\/main:&#091;--thread-content-margin:--spacing(6)&#093; @w-lg\/main:&#091;--thread-content-margin:--spacing(16)&#093; px-(--thread-content-margin)\">\n<div class=\"&#091;--thread-content-max-width:40rem&#093; @w-lg\/main:&#091;--thread-content-max-width:48rem&#093; mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\">\n<div class=\"flex max-w-full flex-col grow\">\n<div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal &#091;.text-message+&amp;&#093;:mt-1\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"3bdeedf2-4edb-4ea4-b0ef-cfa89b5fce5e\" data-message-model-slug=\"gpt-5-t-mini\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden first:pt-&#091;1px&#093;\">\n<div class=\"markdown prose dark:prose-invert w-full break-words light markdown-new-styling\">\n<h3 data-start=\"4620\" data-end=\"4685\">6) Architecture \u00e9lectrique recommand\u00e9e (pratique d\u2019int\u00e9gration)<\/h3>\n<ul data-start=\"4687\" data-end=\"5241\">\n<li data-start=\"4687\" data-end=\"4806\">\n<p data-start=\"4689\" data-end=\"4806\"><strong data-start=\"4689\" data-end=\"4726\">Si le module interne est en s\u00e9rie<\/strong> : il suffit d\u2019un <strong data-start=\"4744\" data-end=\"4764\">driver CC unique<\/strong> 0\u201360 V, 0\u201330 A (mode courant constant).<\/p>\n<\/li>\n<li data-start=\"4807\" data-end=\"4951\">\n<p data-start=\"4809\" data-end=\"4951\"><strong data-start=\"4809\" data-end=\"4877\">Si blocs sont en plusieurs strings (ex : 2\u00d79 en s\u00e9rie\/parall\u00e8le)<\/strong> : soit un driver par string (synchronis\u00e9), soit une alim plus complexe.<\/p>\n<\/li>\n<li data-start=\"4952\" data-end=\"5078\">\n<p data-start=\"4954\" data-end=\"5078\"><strong data-start=\"4954\" data-end=\"4965\">C\u00e2blage<\/strong> : c\u00e2ble court, faible inductance (bus cuivre \u00e9pais), connexions Kelvin pour sense, bypass\/TVS pour transients.<\/p>\n<\/li>\n<li data-start=\"5079\" data-end=\"5160\">\n<p data-start=\"5081\" data-end=\"5160\"><strong data-start=\"5081\" data-end=\"5104\">Filtres et snubbers<\/strong> : limiter r\u00e9flexions\/transients si modulation rapide.<\/p>\n<\/li>\n<li data-start=\"5161\" data-end=\"5241\">\n<p data-start=\"5163\" data-end=\"5241\"><strong data-start=\"5163\" data-end=\"5175\">Monitors<\/strong> : courant et tension sur sorties analog pour logging et s\u00e9curit\u00e9.<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"5248\" data-end=\"5305\">7) Protections et s\u00fbret\u00e9 op\u00e9rationnelle (indispensable)<\/h3>\n<ul data-start=\"5307\" data-end=\"5761\">\n<li data-start=\"5307\" data-end=\"5376\">\n<p data-start=\"5309\" data-end=\"5376\"><strong data-start=\"5309\" data-end=\"5331\">Interlock physique<\/strong> (porte, shutter) qui ouvre la commande DC.<\/p>\n<\/li>\n<li data-start=\"5377\" data-end=\"5424\">\n<p data-start=\"5379\" data-end=\"5424\"><strong data-start=\"5379\" data-end=\"5397\">ESD protection<\/strong> sur connecteurs d\u2019acc\u00e8s.<\/p>\n<\/li>\n<li data-start=\"5425\" data-end=\"5525\">\n<p data-start=\"5427\" data-end=\"5525\"><strong data-start=\"5427\" data-end=\"5454\">Surveillance photodiode<\/strong> : feedback puissance (pour limiter la puissance \u00e0 valeur souhait\u00e9e).<\/p>\n<\/li>\n<li data-start=\"5526\" data-end=\"5588\">\n<p data-start=\"5528\" data-end=\"5588\"><strong data-start=\"5528\" data-end=\"5544\">Temp sensors<\/strong> (NTC sous submount) interfac\u00e9s au driver.<\/p>\n<\/li>\n<li data-start=\"5589\" data-end=\"5761\">\n<p data-start=\"5591\" data-end=\"5761\"><strong data-start=\"5591\" data-end=\"5619\">Raccordement de la terre<\/strong> correct et unique (\u00e9viter boucles).<br data-start=\"5655\" data-end=\"5658\" \/>Ces fonctions sont standard sur les drivers laser professionnels. <span class=\"\" data-state=\"closed\"><span class=\"ms-1 inline-flex max-w-full items-center relative top-&#091;-0.094rem&#093; animate-&#091;show_150ms_ease-in&#093;\" data-testid=\"webpage-citation-pill\"><a class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-&#091;9px&#093; font-medium transition-colors duration-150 ease-in-out text-token-text-secondary! bg-&#091;#F4F4F4&#093;! dark:bg-&#091;#303030&#093;!\" href=\"https:\/\/www.laserdiodecontrol.com\/laser-diode-drivers-current-sources\/shop\/High-Power?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\"><span class=\"relative start-0 bottom-0 flex h-full w-full items-center\"><span class=\"flex h-4 w-full items-center justify-between\"><span class=\"max-w-&#091;15ch&#093; grow truncate overflow-hidden text-center\">Laser Diode Control<\/span><span class=\"-me-1 flex h-full items-center rounded-full px-1 text-&#091;#8F8F8F&#093;\">+1<\/span><\/span><\/span><\/a><\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"5768\" data-end=\"5815\">8) Exemples concrets (\u00e0 titre d\u2019illustration)<\/h3>\n<ul data-start=\"5817\" data-end=\"6538\">\n<li data-start=\"5817\" data-end=\"5983\">\n<p data-start=\"5819\" data-end=\"5983\"><strong data-start=\"5819\" data-end=\"5852\">Cl\u00e9 haut de gamme, instrument<\/strong> : <em data-start=\"5855\" data-end=\"5872\">Keysight N8737A<\/em> \u2014 60 V \/ 55 A \/ 3.3 kW, rack, programmable (tr\u00e8s robuste mais cher). <span class=\"\" data-state=\"closed\"><span class=\"ms-1 inline-flex max-w-full items-center relative top-&#091;-0.094rem&#093; animate-&#091;show_150ms_ease-in&#093;\" data-testid=\"webpage-citation-pill\"><a class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-&#091;9px&#093; font-medium transition-colors duration-150 ease-in-out text-token-text-secondary! bg-&#091;#F4F4F4&#093;! dark:bg-&#091;#303030&#093;!\" href=\"https:\/\/www.keysight.com\/us\/en\/product\/N8737A\/power-supply-60v-55a-3300w.html?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\"><span class=\"relative start-0 bottom-0 flex h-full w-full items-center\"><span class=\"flex h-4 w-full items-center justify-between overflow-hidden\"><span class=\"max-w-&#091;15ch&#093; grow truncate overflow-hidden text-center\">Keysight<\/span><\/span><\/span><\/a><\/span><\/span><\/p>\n<\/li>\n<li data-start=\"5984\" data-end=\"6187\">\n<p data-start=\"5986\" data-end=\"6187\"><strong data-start=\"5986\" data-end=\"6024\">Alim industrielle pour int\u00e9gration<\/strong> : <em data-start=\"6027\" data-end=\"6043\">TDK-Lambda GEN<\/em> \/ <em data-start=\"6046\" data-end=\"6055\">GENESYS<\/em> \u2014 variantes 60 V \/ 12.5\u201325 A \/ mod\u00e8les multi-kW. Bonnes options pour int\u00e9gration syst\u00e8me. <span class=\"\" data-state=\"closed\"><span class=\"ms-1 inline-flex max-w-full items-center relative top-&#091;-0.094rem&#093; animate-&#091;show_150ms_ease-in&#093;\" data-testid=\"webpage-citation-pill\"><a class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-&#091;9px&#093; font-medium transition-colors duration-150 ease-in-out text-token-text-secondary! bg-&#091;#F4F4F4&#093;! dark:bg-&#091;#303030&#093;!\" href=\"https:\/\/product.tdk.com\/en\/search\/power\/switching-power\/prg-power\/info?part_no=GENH60-12.5&amp;utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\"><span class=\"relative start-0 bottom-0 flex h-full w-full items-center\"><span class=\"flex h-4 w-full items-center justify-between\"><span class=\"max-w-&#091;15ch&#093; grow truncate overflow-hidden text-center\">product.tdk.com<\/span><span class=\"-me-1 flex h-full items-center rounded-full px-1 text-&#091;#8F8F8F&#093;\">+1<\/span><\/span><\/span><\/a><\/span><\/span><\/p>\n<\/li>\n<li data-start=\"6188\" data-end=\"6394\">\n<p data-start=\"6190\" data-end=\"6394\"><strong data-start=\"6190\" data-end=\"6212\">Driver laser d\u00e9di\u00e9<\/strong> : <em data-start=\"6215\" data-end=\"6231\">PicoLAS LDP-CW<\/em> (gamme disponible en dizaines d\u2019amp\u00e8res, protections, modulation analog\/TTL) \u2014 id\u00e9al si tu veux pilotage optimis\u00e9 diode. <span class=\"\" data-state=\"closed\"><span class=\"ms-1 inline-flex max-w-full items-center relative top-&#091;-0.094rem&#093; animate-&#091;show_150ms_ease-in&#093;\" data-testid=\"webpage-citation-pill\"><a class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-&#091;9px&#093; font-medium transition-colors duration-150 ease-in-out text-token-text-secondary! bg-&#091;#F4F4F4&#093;! dark:bg-&#091;#303030&#093;!\" href=\"https:\/\/www.picolas.de\/en\/produkt\/ldp-cw-50-05\/?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\"><span class=\"relative start-0 bottom-0 flex h-full w-full items-center\"><span class=\"flex h-4 w-full items-center justify-between\"><span class=\"max-w-&#091;15ch&#093; grow truncate overflow-hidden text-center\">picolas.de<\/span><span class=\"-me-1 flex h-full items-center rounded-full px-1 text-&#091;#8F8F8F&#093;\">+1<\/span><\/span><\/span><\/a><\/span><\/span><\/p>\n<\/li>\n<li data-start=\"6395\" data-end=\"6538\">\n<p data-start=\"6397\" data-end=\"6538\"><strong data-start=\"6397\" data-end=\"6422\">Drivers OEM &amp; modules<\/strong> : Meerstetter, Lumina\/Analog Modules, etc. (tr\u00e8s r\u00e9pandus dans photonique). <span class=\"\" data-state=\"closed\"><span class=\"ms-1 inline-flex max-w-full items-center relative top-&#091;-0.094rem&#093; animate-&#091;show_150ms_ease-in&#093;\" data-testid=\"webpage-citation-pill\"><a class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-&#091;9px&#093; font-medium transition-colors duration-150 ease-in-out text-token-text-secondary! bg-&#091;#F4F4F4&#093;! dark:bg-&#091;#303030&#093;!\" href=\"https:\/\/www.meerstetter.ch\/products\/laser-diode-drivers?srsltid=AfmBOooxTd3dDKG2HCKhoVazsg1rXh9Br27doE9rQi9UcsiQjX5NGHBF&amp;utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\"><span class=\"relative start-0 bottom-0 flex h-full w-full items-center\"><span class=\"flex h-4 w-full items-center justify-between\"><span class=\"max-w-&#091;15ch&#093; grow truncate overflow-hidden text-center\">meerstetter.ch<\/span><span class=\"-me-1 flex h-full items-center rounded-full px-1 text-&#091;#8F8F8F&#093;\">+1<\/span><\/span><\/span><\/a><\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"6545\" data-end=\"6608\">9) Exemple de configuration recommand\u00e9e pour ton module 260 W<\/h3>\n<ul data-start=\"6609\" data-end=\"7148\">\n<li data-start=\"6609\" data-end=\"6845\">\n<p data-start=\"6611\" data-end=\"6845\"><strong data-start=\"6611\" data-end=\"6621\">Driver<\/strong> : PicoLAS LDP-CW (ou Meerstetter LDD haut courant) capable de <strong data-start=\"6684\" data-end=\"6693\">\u226515 A<\/strong> en sortie continue <em data-start=\"6713\" data-end=\"6717\">et<\/em> compliance \u2265 40 V, OU une alim programmable 0\u201360 V \/ 0\u201330 A + contr\u00f4leur laser d\u00e9di\u00e9. <span class=\"\" data-state=\"closed\"><span class=\"ms-1 inline-flex max-w-full items-center relative top-&#091;-0.094rem&#093; animate-&#091;show_150ms_ease-in&#093;\" data-testid=\"webpage-citation-pill\"><a class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-&#091;9px&#093; font-medium transition-colors duration-150 ease-in-out text-token-text-secondary! bg-&#091;#F4F4F4&#093;! dark:bg-&#091;#303030&#093;!\" href=\"https:\/\/www.lasercomponents.com\/fileadmin\/user_upload\/home\/Datasheets\/picolas\/ldp-c_50-05-driver.pdf?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\"><span class=\"relative start-0 bottom-0 flex h-full w-full items-center\"><span class=\"flex h-4 w-full items-center justify-between\"><span class=\"max-w-&#091;15ch&#093; grow truncate overflow-hidden text-center\">Laser Components<\/span><span class=\"-me-1 flex h-full items-center rounded-full px-1 text-&#091;#8F8F8F&#093;\">+1<\/span><\/span><\/span><\/a><\/span><\/span><\/p>\n<\/li>\n<li data-start=\"6846\" data-end=\"6954\">\n<p data-start=\"6848\" data-end=\"6954\"><strong data-start=\"6848\" data-end=\"6875\">Alimentation auxiliaire<\/strong> : si le driver n\u00e9cessite alimentation DC, pr\u00e9voir bloc 1 kW+ (selon driver).<\/p>\n<\/li>\n<li data-start=\"6955\" data-end=\"7051\">\n<p data-start=\"6957\" data-end=\"7051\"><strong data-start=\"6957\" data-end=\"6980\">Monitoring \/ safety<\/strong> : photodiode + NTC + interlock TTL + enregistrement courant\/tension.<\/p>\n<\/li>\n<li data-start=\"7052\" data-end=\"7148\">\n<p data-start=\"7054\" data-end=\"7148\"><strong data-start=\"7054\" data-end=\"7064\">C\u00e2bles<\/strong> : court, calibre adapt\u00e9 (p.ex. 6\u20138 mm\u00b2 cuivre pour courants &gt; 10 A), et blindage.<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"7155\" data-end=\"7192\">10) Co\u00fbts et disponibilit\u00e9 (aper\u00e7u)<\/h3>\n<ul data-start=\"7193\" data-end=\"7521\">\n<li data-start=\"7193\" data-end=\"7366\">\n<p data-start=\"7195\" data-end=\"7366\">Driver laser d\u00e9di\u00e9 (PicoLAS \/ Meerstetter) : <strong data-start=\"7240\" data-end=\"7290\">quelques centaines \u00e0 quelques milliers d\u2019euros<\/strong> selon courant et fonctionnalit\u00e9s. <span class=\"\" data-state=\"closed\"><span class=\"ms-1 inline-flex max-w-full items-center relative top-&#091;-0.094rem&#093; animate-&#091;show_150ms_ease-in&#093;\" data-testid=\"webpage-citation-pill\"><a class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-&#091;9px&#093; font-medium transition-colors duration-150 ease-in-out text-token-text-secondary! bg-&#091;#F4F4F4&#093;! dark:bg-&#091;#303030&#093;!\" href=\"https:\/\/www.picolas.de\/en\/produkt-kategorie\/high-power-driver-en\/?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\"><span class=\"relative start-0 bottom-0 flex h-full w-full items-center\"><span class=\"flex h-4 w-full items-center justify-between\"><span class=\"max-w-&#091;15ch&#093; grow truncate overflow-hidden text-center\">picolas.de<\/span><span class=\"-me-1 flex h-full items-center rounded-full px-1 text-&#091;#8F8F8F&#093;\">+1<\/span><\/span><\/span><\/a><\/span><\/span><\/p>\n<\/li>\n<li data-start=\"7367\" data-end=\"7521\">\n<p data-start=\"7369\" data-end=\"7521\">Alims rack 1\u20133 kW (Keysight, Delta, TDK-Lambda) : <strong data-start=\"7419\" data-end=\"7449\">plusieurs milliers d\u2019euros<\/strong> (Keysight\/Delta haut de gamme). <span class=\"\" data-state=\"closed\"><span class=\"ms-1 inline-flex max-w-full items-center relative top-&#091;-0.094rem&#093; animate-&#091;show_150ms_ease-in&#093;\" data-testid=\"webpage-citation-pill\"><a class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-&#091;9px&#093; font-medium transition-colors duration-150 ease-in-out text-token-text-secondary! bg-&#091;#F4F4F4&#093;! dark:bg-&#091;#303030&#093;!\" href=\"https:\/\/www.keysight.com\/us\/en\/product\/N8737A\/power-supply-60v-55a-3300w.html?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\"><span class=\"relative start-0 bottom-0 flex h-full w-full items-center\"><span class=\"flex h-4 w-full items-center justify-between\"><span class=\"max-w-&#091;15ch&#093; grow truncate overflow-hidden text-center\">Keysight<\/span><span class=\"-me-1 flex h-full items-center rounded-full px-1 text-&#091;#8F8F8F&#093;\">+1<\/span><\/span><\/span><\/a><\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"7523\" data-end=\"7526\" \/>\n<p data-start=\"7528\" data-end=\"7618\">Si tu veux que je <strong data-start=\"7546\" data-end=\"7569\">calcule pr\u00e9cis\u00e9ment<\/strong> l\u2019alimentation id\u00e9ale, dis-moi (sans attendre) :<\/p>\n<ul data-start=\"7620\" data-end=\"7870\">\n<li data-start=\"7620\" data-end=\"7715\">\n<p data-start=\"7622\" data-end=\"7715\">le <strong data-start=\"7625\" data-end=\"7654\">sch\u00e9ma \u00e9lectrique interne<\/strong> (les 18 barres sont-elles en s\u00e9rie compl\u00e8te, 2\u00d79, etc. ?),<\/p>\n<\/li>\n<li data-start=\"7716\" data-end=\"7806\">\n<p data-start=\"7718\" data-end=\"7806\">la <strong data-start=\"7721\" data-end=\"7750\">tension directe par barre<\/strong> (si tu la connais, sinon je prendrai 2.0 V\/barre), et<\/p>\n<\/li>\n<li data-start=\"7807\" data-end=\"7870\">\n<p data-start=\"7809\" data-end=\"7870\">la <strong data-start=\"7812\" data-end=\"7841\">courant nominal par barre<\/strong> (ou la puissance par barre).<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"7872\" data-end=\"7995\">Je peux alors <em data-start=\"7886\" data-end=\"7901\">tout de suite<\/em> te donner la tension\/courant exacts \u00e0 viser et proposer 2\u20133 mod\u00e8les pr\u00e9cis adapt\u00e9s au budget.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"z-0 flex min-h-&#091;46px&#093; justify-start\"><\/div>\n<\/div>\n<\/div>\n<\/article>\n<article class=\"text-token-text-primary w-full focus:outline-none &#091;--shadow-height:45px&#093; has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) &#091;&amp;:has(&#091;data-writing-block&#093;)&gt;*&#093;:pointer-events-auto scroll-mt-(--header-height)\" dir=\"auto\" tabindex=\"-1\" data-turn-id=\"ebf53d69-e558-4328-93c7-563b63f8a73b\" data-testid=\"conversation-turn-13\" data-scroll-anchor=\"false\" data-turn=\"user\">\n<h5 class=\"sr-only\"><\/h5>\n<\/article>\n<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<\/div><\/section><\/div>\n<div class=\"flex_column av_one_full  flex_column_div av-zero-column-padding first  avia-builder-el-29  el_after_av_one_full  el_before_av_one_full  column-top-margin\" style='border-radius:0px; '><div  class='avia-image-container  av-styling-    avia-builder-el-30  avia-builder-el-no-sibling  avia-align-center '  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\"  ><div class='avia-image-container-inner'><div class='avia-image-overlay-wrap'><img decoding=\"async\" class='wp-image-3972 avia-img-lazy-loading-not-3972 avia_image' src=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251210_143124-1-scaled.jpg\" alt='' title='20251210_143124' height=\"1152\" width=\"2560\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251210_143124-1-scaled.jpg 2560w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251210_143124-1-300x135.jpg 300w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251210_143124-1-1030x464.jpg 1030w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251210_143124-1-768x346.jpg 768w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251210_143124-1-1536x691.jpg 1536w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251210_143124-1-2048x922.jpg 2048w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251210_143124-1-1500x675.jpg 1500w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2025\/12\/20251210_143124-1-705x317.jpg 705w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><\/div><\/div><\/div><\/div>\n<div class=\"flex_column av_one_full  flex_column_div av-zero-column-padding first  avia-builder-el-31  el_after_av_one_full  avia-builder-el-last  column-top-margin\" style='border-radius:0px; '><section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><h2 data-start=\"259\" data-end=\"277\">Objectif ESD<\/h2>\n<p data-start=\"278\" data-end=\"496\">\ud83d\udc49 Emp\u00eacher <strong data-start=\"290\" data-end=\"327\">toute surtension &gt; quelques volts<\/strong> aux bornes de la diode<br data-start=\"350\" data-end=\"353\" \/>\ud83d\udc49 \u00c9viter <strong data-start=\"363\" data-end=\"403\">toute d\u00e9charge rapide (dV\/dt, dI\/dt)<\/strong><br data-start=\"403\" data-end=\"406\" \/>\ud83d\udc49 Garantir une manipulation et un c\u00e2blage s\u00fbrs <strong data-start=\"454\" data-end=\"496\">avant, pendant et apr\u00e8s l\u2019installation<\/strong><\/p>\n<hr data-start=\"498\" data-end=\"501\" \/>\n<h3 data-start=\"503\" data-end=\"566\">1\ufe0f\u20e3 Protection ESD <strong data-start=\"525\" data-end=\"552\">pendant la manipulation<\/strong> (OBLIGATOIRE)<\/h3>\n<h3 data-start=\"568\" data-end=\"590\">\u2705 Poste de travail<\/h3>\n<ul data-start=\"591\" data-end=\"735\">\n<li data-start=\"591\" data-end=\"636\">\n<p data-start=\"593\" data-end=\"636\"><strong data-start=\"593\" data-end=\"619\">Tapis antistatique ESD<\/strong> reli\u00e9 \u00e0 la terre<\/p>\n<\/li>\n<li data-start=\"637\" data-end=\"684\">\n<p data-start=\"639\" data-end=\"684\"><strong data-start=\"639\" data-end=\"655\">Bracelet ESD<\/strong> (1 M\u03a9) reli\u00e9 \u00e0 la m\u00eame terre<\/p>\n<\/li>\n<li data-start=\"685\" data-end=\"735\">\n<p data-start=\"687\" data-end=\"735\">Humidit\u00e9 ambiante <strong data-start=\"705\" data-end=\"716\">40\u201360 %<\/strong> (air sec = danger)<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"737\" data-end=\"767\">\u2705 Manipulation de la diode<\/h3>\n<ul data-start=\"768\" data-end=\"920\">\n<li data-start=\"768\" data-end=\"877\">\n<p data-start=\"770\" data-end=\"796\">Toujours garder la diode :<\/p>\n<ul data-start=\"799\" data-end=\"877\">\n<li data-start=\"799\" data-end=\"834\">\n<p data-start=\"801\" data-end=\"834\"><strong data-start=\"801\" data-end=\"820\">court-circuit\u00e9e<\/strong> (LD+ \u2194 LD\u2013)<\/p>\n<\/li>\n<li data-start=\"837\" data-end=\"877\">\n<p data-start=\"839\" data-end=\"877\">ou <strong data-start=\"842\" data-end=\"877\">branch\u00e9e \u00e0 une charge r\u00e9sistive<\/strong><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li data-start=\"878\" data-end=\"920\">\n<p data-start=\"880\" data-end=\"920\">Ne jamais laisser les broches \u201cen l\u2019air\u201d<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"922\" data-end=\"941\">\ud83d\udccc <strong data-start=\"925\" data-end=\"939\">R\u00e8gle d\u2019or<\/strong><\/p>\n<blockquote data-start=\"942\" data-end=\"1012\">\n<p data-start=\"944\" data-end=\"1012\">Une diode laser <strong data-start=\"960\" data-end=\"1011\">ne doit jamais \u00eatre d\u00e9connect\u00e9e sans protection<\/strong>.<\/p>\n<\/blockquote>\n<h3 data-start=\"1019\" data-end=\"1090\">2\ufe0f\u20e3 Protection ESD <strong data-start=\"1041\" data-end=\"1066\">\u00e9lectrique permanente<\/strong> (FORTEMENT RECOMMAND\u00c9E)<\/h3>\n<h3 data-start=\"1092\" data-end=\"1144\">\ud83d\udd39 A. Diode TVS (transil) aux bornes de la diode<\/h3>\n<p data-start=\"1146\" data-end=\"1187\">\ud83d\udc49 <strong data-start=\"1149\" data-end=\"1166\">Indispensable<\/strong> pour une diode 500 W<\/p>\n<ul data-start=\"1189\" data-end=\"1292\">\n<li data-start=\"1189\" data-end=\"1222\">\n<p data-start=\"1191\" data-end=\"1222\">Type : <strong data-start=\"1198\" data-end=\"1222\">TVS bidirectionnelle<\/strong><\/p>\n<\/li>\n<li data-start=\"1223\" data-end=\"1258\">\n<p data-start=\"1225\" data-end=\"1258\">Tension de claquage : <strong data-start=\"1247\" data-end=\"1258\">36\u201340 V<\/strong><\/p>\n<\/li>\n<li data-start=\"1259\" data-end=\"1292\">\n<p data-start=\"1261\" data-end=\"1292\">Puissance impulsionnelle \u00e9lev\u00e9e<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1294\" data-end=\"1316\">Exemples adapt\u00e9s :<\/h3>\n<ul data-start=\"1317\" data-end=\"1382\">\n<li data-start=\"1317\" data-end=\"1331\">\n<p data-start=\"1319\" data-end=\"1331\"><strong data-start=\"1319\" data-end=\"1331\">SMCJ36CA<\/strong><\/p>\n<\/li>\n<li data-start=\"1332\" data-end=\"1346\">\n<p data-start=\"1334\" data-end=\"1346\"><strong data-start=\"1334\" data-end=\"1346\">SMCJ40CA<\/strong><\/p>\n<\/li>\n<li data-start=\"1347\" data-end=\"1382\">\n<p data-start=\"1349\" data-end=\"1382\"><strong data-start=\"1349\" data-end=\"1360\">5KP36CA<\/strong> (encore plus robuste)<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1384\" data-end=\"1411\">\ud83d\udccd <strong data-start=\"1387\" data-end=\"1409\">Placement CRITIQUE<\/strong> :<\/p>\n<ul data-start=\"1412\" data-end=\"1480\">\n<li data-start=\"1412\" data-end=\"1461\">\n<p data-start=\"1414\" data-end=\"1461\">soud\u00e9e <strong data-start=\"1421\" data-end=\"1461\">au plus pr\u00e8s possible des broches LD<\/strong><\/p>\n<\/li>\n<li data-start=\"1462\" data-end=\"1480\">\n<p data-start=\"1464\" data-end=\"1480\">fils tr\u00e8s courts<\/p>\n<\/li>\n<\/ul>\n<div class=\"contain-inline-size rounded-2xl corner-superellipse\/1.1 relative bg-token-sidebar-surface-primary\">\n<div class=\"@w-xl\/main:top-9 sticky top-&#091;calc(--spacing(9)+var(--header-height))&#093;\">\n<div class=\"absolute end-0 bottom-0 flex h-9 items-center pe-2\">\n<div class=\"bg-token-bg-elevated-secondary text-token-text-secondary flex items-center gap-4 rounded-sm px-2 font-sans text-xs\"><\/div>\n<\/div>\n<\/div>\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"whitespace-pre!\"> LD+ o<span class=\"hljs-comment\">----+----&gt; vers driver +<\/span><br \/>\n|<br \/>\n[TVS]<br \/>\n|<br \/>\nLD- o<span class=\"hljs-comment\">----+----&gt; vers driver \u2013<\/span><br \/>\n<\/code><\/div>\n<\/div>\n<p data-start=\"1594\" data-end=\"1605\">\ud83d\udc49 La TVS :<\/p>\n<ul data-start=\"1606\" data-end=\"1719\">\n<li data-start=\"1606\" data-end=\"1635\">\n<p data-start=\"1608\" data-end=\"1635\">\u00e9cr\u00eate toute surtension ESD<\/p>\n<\/li>\n<li data-start=\"1636\" data-end=\"1667\">\n<p data-start=\"1638\" data-end=\"1667\">absorbe les pics transitoires<\/p>\n<\/li>\n<li data-start=\"1668\" data-end=\"1719\">\n<p data-start=\"1670\" data-end=\"1719\">prot\u00e8ge lors des branchements \u00e0 chaud accidentels<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"1721\" data-end=\"1724\" \/>\n<h3 data-start=\"1726\" data-end=\"1768\">\ud83d\udd39 B. R\u00e9sistance de d\u00e9charge (bleeder)<\/h3>\n<ul data-start=\"1770\" data-end=\"1875\">\n<li data-start=\"1770\" data-end=\"1799\">\n<p data-start=\"1772\" data-end=\"1799\">Valeur : <strong data-start=\"1781\" data-end=\"1799\">10 k\u03a9 \u00e0 100 k\u03a9<\/strong><\/p>\n<\/li>\n<li data-start=\"1800\" data-end=\"1836\">\n<p data-start=\"1802\" data-end=\"1836\">Puissance : faible (0,25 W suffit)<\/p>\n<\/li>\n<li data-start=\"1837\" data-end=\"1875\">\n<p data-start=\"1839\" data-end=\"1875\">Plac\u00e9e <strong data-start=\"1846\" data-end=\"1875\">en parall\u00e8le sur la diode<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1877\" data-end=\"1886\">\ud83d\udc49 R\u00f4le :<\/p>\n<ul data-start=\"1887\" data-end=\"1979\">\n<li data-start=\"1887\" data-end=\"1917\">\n<p data-start=\"1889\" data-end=\"1917\">\u00e9vite accumulation de charge<\/p>\n<\/li>\n<li data-start=\"1918\" data-end=\"1942\">\n<p data-start=\"1920\" data-end=\"1942\">stabilise le potentiel<\/p>\n<\/li>\n<li data-start=\"1943\" data-end=\"1979\">\n<p data-start=\"1945\" data-end=\"1979\">prot\u00e8ge quand le driver est \u00e9teint<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1986\" data-end=\"2041\">3\ufe0f\u20e3 Protection <strong data-start=\"2004\" data-end=\"2041\">contre les transitoires du driver<\/strong><\/h3>\n<p data-start=\"2043\" data-end=\"2090\">M\u00eame avec un bon driver, il faut se m\u00e9fier de :<\/p>\n<ul data-start=\"2091\" data-end=\"2167\">\n<li data-start=\"2091\" data-end=\"2116\">\n<p data-start=\"2093\" data-end=\"2116\">coupures d\u2019alimentation<\/p>\n<\/li>\n<li data-start=\"2117\" data-end=\"2128\">\n<p data-start=\"2119\" data-end=\"2128\">interlock<\/p>\n<\/li>\n<li data-start=\"2129\" data-end=\"2143\">\n<p data-start=\"2131\" data-end=\"2143\">c\u00e2bles longs<\/p>\n<\/li>\n<li data-start=\"2144\" data-end=\"2167\">\n<p data-start=\"2146\" data-end=\"2167\">inductances parasites<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"2169\" data-end=\"2228\">\ud83d\udd39 C. Condensateur local (optionnel mais tr\u00e8s efficace)<\/h3>\n<ul data-start=\"2230\" data-end=\"2368\">\n<li data-start=\"2230\" data-end=\"2278\">\n<p data-start=\"2232\" data-end=\"2278\">Type : <strong data-start=\"2239\" data-end=\"2278\">film polypropyl\u00e8ne ou c\u00e9ramique X7R<\/strong><\/p>\n<\/li>\n<li data-start=\"2279\" data-end=\"2307\">\n<p data-start=\"2281\" data-end=\"2307\">Valeur : <strong data-start=\"2290\" data-end=\"2307\">100 nF \u00e0 1 \u00b5F<\/strong><\/p>\n<\/li>\n<li data-start=\"2308\" data-end=\"2330\">\n<p data-start=\"2310\" data-end=\"2330\">Tension : <strong data-start=\"2320\" data-end=\"2330\">\u2265 50 V<\/strong><\/p>\n<\/li>\n<li data-start=\"2331\" data-end=\"2368\">\n<p data-start=\"2333\" data-end=\"2368\">Plac\u00e9 <strong data-start=\"2339\" data-end=\"2368\">directement sur LD+ \/ LD\u2013<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2370\" data-end=\"2429\">\u26a0\ufe0f Ne pas d\u00e9passer quelques \u00b5F (sinon instabilit\u00e9 possible)<\/p>\n<h3 data-start=\"2436\" data-end=\"2477\">4\ufe0f\u20e3 C\u00e2blage anti-ESD (souvent n\u00e9glig\u00e9)<\/h3>\n<h3 data-start=\"2479\" data-end=\"2500\">\u2705 Recommandations<\/h3>\n<ul data-start=\"2501\" data-end=\"2664\">\n<li data-start=\"2501\" data-end=\"2549\">\n<p data-start=\"2503\" data-end=\"2549\">C\u00e2bles <strong data-start=\"2510\" data-end=\"2520\">courts<\/strong>, <strong data-start=\"2522\" data-end=\"2534\">torsad\u00e9s<\/strong> (LD+ avec LD\u2013)<\/p>\n<\/li>\n<li data-start=\"2550\" data-end=\"2570\">\n<p data-start=\"2552\" data-end=\"2570\">\u00c9viter les boucles<\/p>\n<\/li>\n<li data-start=\"2571\" data-end=\"2622\">\n<p data-start=\"2573\" data-end=\"2622\">\u00c9cran reli\u00e9 \u00e0 la <strong data-start=\"2590\" data-end=\"2622\">terre c\u00f4t\u00e9 driver uniquement<\/strong><\/p>\n<\/li>\n<li data-start=\"2623\" data-end=\"2664\">\n<p data-start=\"2625\" data-end=\"2664\">Pas de connecteurs d\u00e9brochables \u00e0 chaud<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"2671\" data-end=\"2724\">5\ufe0f\u20e3 S\u00e9quence de connexion \/ d\u00e9connexion (CRITIQUE)<\/h3>\n<h3 data-start=\"2726\" data-end=\"2741\">\u2705 Connexion<\/h3>\n<ol data-start=\"2742\" data-end=\"2923\">\n<li data-start=\"2742\" data-end=\"2768\">\n<p data-start=\"2745\" data-end=\"2768\">Driver <strong data-start=\"2752\" data-end=\"2768\">hors tension<\/strong><\/p>\n<\/li>\n<li data-start=\"2769\" data-end=\"2797\">\n<p data-start=\"2772\" data-end=\"2797\">Diode <strong data-start=\"2778\" data-end=\"2797\">court-circuit\u00e9e<\/strong><\/p>\n<\/li>\n<li data-start=\"2798\" data-end=\"2829\">\n<p data-start=\"2801\" data-end=\"2829\">Connecter la diode au driver<\/p>\n<\/li>\n<li data-start=\"2830\" data-end=\"2857\">\n<p data-start=\"2833\" data-end=\"2857\">Retirer le court-circuit<\/p>\n<\/li>\n<li data-start=\"2858\" data-end=\"2892\">\n<p data-start=\"2861\" data-end=\"2892\">Activer le driver (courant = 0)<\/p>\n<\/li>\n<li data-start=\"2893\" data-end=\"2923\">\n<p data-start=\"2896\" data-end=\"2923\">Monter le courant lentement<\/p>\n<\/li>\n<\/ol>\n<h3 data-start=\"2925\" data-end=\"2948\">\u274c \u00c0 ne jamais faire<\/h3>\n<ul data-start=\"2949\" data-end=\"3081\">\n<li data-start=\"2949\" data-end=\"2989\">\n<p data-start=\"2951\" data-end=\"2989\">Brancher\/d\u00e9brancher diode sous tension<\/p>\n<\/li>\n<li data-start=\"2990\" data-end=\"3029\">\n<p data-start=\"2992\" data-end=\"3029\">Toucher les broches sans bracelet ESD<\/p>\n<\/li>\n<li data-start=\"3030\" data-end=\"3081\">\n<p data-start=\"3032\" data-end=\"3081\">Laisser la diode connect\u00e9e \u00e0 des c\u00e2bles flottants<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"3088\" data-end=\"3137\">6\ufe0f\u20e3 Niveau de protection recommand\u00e9 (synth\u00e8se)<\/h3>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex w-fit flex-col-reverse\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"3139\" data-end=\"3321\">\n<thead data-start=\"3139\" data-end=\"3159\">\n<tr data-start=\"3139\" data-end=\"3159\">\n<th data-start=\"3139\" data-end=\"3148\" data-col-size=\"sm\">Niveau<\/th>\n<th data-start=\"3148\" data-end=\"3159\" data-col-size=\"md\">Mesures<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"3172\" data-end=\"3321\">\n<tr data-start=\"3172\" data-end=\"3204\">\n<td data-start=\"3172\" data-end=\"3186\" data-col-size=\"sm\"><strong data-start=\"3174\" data-end=\"3185\">Minimum<\/strong><\/td>\n<td data-col-size=\"md\" data-start=\"3186\" data-end=\"3204\">Bracelet + TVS<\/td>\n<\/tr>\n<tr data-start=\"3205\" data-end=\"3246\">\n<td data-start=\"3205\" data-end=\"3215\" data-col-size=\"sm\"><strong data-start=\"3207\" data-end=\"3214\">Bon<\/strong><\/td>\n<td data-col-size=\"md\" data-start=\"3215\" data-end=\"3246\">Bracelet + TVS + r\u00e9sistance<\/td>\n<\/tr>\n<tr data-start=\"3247\" data-end=\"3321\">\n<td data-start=\"3247\" data-end=\"3264\" data-col-size=\"sm\"><strong data-start=\"3249\" data-end=\"3263\">Industriel<\/strong><\/td>\n<td data-col-size=\"md\" data-start=\"3264\" data-end=\"3321\">Bracelet + TVS + r\u00e9sistance + condo + c\u00e2bles torsad\u00e9s<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p data-start=\"3323\" data-end=\"3398\">\ud83d\udc49 Pour <strong data-start=\"3331\" data-end=\"3340\">500 W<\/strong>, je recommande <strong data-start=\"3356\" data-end=\"3380\">le niveau industriel<\/strong>, sans h\u00e9sitation.<\/p>\n<h3 data-start=\"3405\" data-end=\"3456\">7\ufe0f\u20e3 Ce que font les industriels (retour terrain)<\/h3>\n<p data-start=\"3457\" data-end=\"3492\">Sur des bancs industriels &gt; 300 W :<\/p>\n<ul data-start=\"3493\" data-end=\"3611\">\n<li data-start=\"3493\" data-end=\"3520\">\n<p data-start=\"3495\" data-end=\"3520\">TVS <strong data-start=\"3499\" data-end=\"3520\">toujours pr\u00e9sente<\/strong><\/p>\n<\/li>\n<li data-start=\"3521\" data-end=\"3553\">\n<p data-start=\"3523\" data-end=\"3553\">diode jamais laiss\u00e9e flottante<\/p>\n<\/li>\n<li data-start=\"3554\" data-end=\"3590\">\n<p data-start=\"3556\" data-end=\"3590\">soft-start lent (comme ton driver)<\/p>\n<\/li>\n<li data-start=\"3591\" data-end=\"3611\">\n<p data-start=\"3593\" data-end=\"3611\">humidit\u00e9 contr\u00f4l\u00e9e<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3613\" data-end=\"3680\">\ud83d\udc49 C\u2019est ce qui permet <strong data-start=\"3636\" data-end=\"3679\">des milliers d\u2019heures de fonctionnement<\/strong>.<\/p>\n<hr data-start=\"3682\" data-end=\"3685\" \/>\n<h2 data-start=\"3687\" data-end=\"3727\">8\ufe0f\u20e3 Si tu veux aller encore plus loin<\/h2>\n<\/div><\/section><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":3919,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-3947","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lasers-a-solides"],"_links":{"self":[{"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3947","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3947"}],"version-history":[{"count":33,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3947\/revisions"}],"predecessor-version":[{"id":4332,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3947\/revisions\/4332"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/index.php?rest_route=\/wp\/v2\/media\/3919"}],"wp:attachment":[{"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3947"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3947"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3947"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}