{"id":1132,"date":"2022-12-17T21:00:30","date_gmt":"2022-12-17T20:00:30","guid":{"rendered":"http:\/\/s848664668.onlinehome.fr\/Wordpress\/?p=1132"},"modified":"2025-10-11T16:42:03","modified_gmt":"2025-10-11T14:42:03","slug":"laser-a-colorant-rhodamine-6g-picoseconde-model-specta-physics-3500","status":"publish","type":"post","link":"https:\/\/www.swissrocketman.fr\/Wordpress\/?p=1132","title":{"rendered":"Laser \u00e0 colorant Rhodamine 6G picoseconde Model Specta Physics 3500"},"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  style='padding-bottom:10px; color:#f9ca0c;' class='av-special-heading av-special-heading-h1 custom-color-heading blockquote classic-quote  avia-builder-el-1  avia-builder-el-no-sibling  '><h1 class='av-special-heading-tag '  itemprop=\"headline\"  >Laser \u00e0 colorant Rhodamine 6G picoseconde Model Spectra Physics 3500<\/h1><div class='special-heading-border'><div class='special-heading-inner-border' style='border-color:#f9ca0c'><\/div><\/div><\/div><\/div>\n<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_full  column-top-margin\" style='border-radius:0px; '><div  class='avia-video avia-video-16-9   av-lazyload-immediate  av-lazyload-video-embed  ' style='background-image:url(\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2022\/12\/20221217_174657-scaled.jpg\");'  itemprop=\"video\" itemtype=\"https:\/\/schema.org\/VideoObject\"  data-original_url='https:\/\/youtu.be\/YTk39HxC-l0' ><script type='text\/html' class='av-video-tmpl'><div class='avia-iframe-wrap'><iframe loading=\"lazy\" title=\"SPECTRA PHYSICS Picosecond DYE LASER  Model 3500\" width=\"1500\" height=\"844\" src=\"https:\/\/www.youtube.com\/embed\/YTk39HxC-l0?feature=oembed&autoplay=0&loop=0&controls=1&mute=0\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" 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_full  flex_column_div av-zero-column-padding first  avia-builder-el-4  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=\"288\" data-end=\"387\"><span style=\"color: #339966;\">1) Comment on obtient des pulses picoseconde dans un laser \u00e0 colorant R6G \u2014 principe op\u00e9rationnel<\/span><\/h3>\n<ul data-start=\"388\" data-end=\"1877\">\n<li data-start=\"388\" data-end=\"887\">\n<p data-start=\"390\" data-end=\"887\"><strong data-start=\"390\" data-end=\"437\">Pompage synchronis\u00e9 par un laser mode-lock\u00e9<\/strong> : la fa\u00e7on la plus courante pour produire des impulsions picoseconde avec une cavit\u00e9 \u00e0 colorant est de <strong data-start=\"541\" data-end=\"609\">synchroniser la cavit\u00e9 du colorant sur un laser pompe mode-lock\u00e9<\/strong> (ex. une seconde harmonique 532 nm d\u2019un Nd:YAG ou Nd:YLF mode-lock\u00e9). Le pompage p\u00e9riodique excite la mol\u00e9cule de R6G suivant le train d\u2019impulsions du pompe, ce qui permet d\u2019\u00e9mettre des impulsions picoseconde dans la cavit\u00e9 du colorant. <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:\/\/pdxscholar.library.pdx.edu\/cgi\/viewcontent.cgi?article=1037&amp;context=ece_fac&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\">pdxscholar.library.pdx.edu<\/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=\"888\" data-end=\"1254\">\n<p data-start=\"890\" data-end=\"1254\"><strong data-start=\"890\" data-end=\"937\">Mode-locking intra-cavit\u00e9 (passif ou actif)<\/strong> : on peut aussi mode-locker la cavit\u00e9 du colorant elle-m\u00eame par un \u00e9l\u00e9ment saturable (passif) ou par modulation acousto\/\u00e9lectro-optique (actif). Le verrouillage passif donne souvent les dur\u00e9es les plus courtes mais r\u00e9clame optimisation (longueur de cavit\u00e9, dispersion, gain). <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:\/\/pubs.aip.org\/aip\/apr\/article\/6\/2\/021317\/570142\/Review-of-mid-infrared-mode-locked-laser-sources?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\">AIP Publishing<\/span><\/span><\/span><\/a><\/span><\/span>.<\/p>\n<\/li>\n<li data-start=\"1255\" data-end=\"1582\">\n<p data-start=\"1257\" data-end=\"1582\"><strong data-start=\"1257\" data-end=\"1285\">Compression\/optimisation<\/strong> : suivant le design on emploie des \u00e9l\u00e9ments intracavit\u00e9 (miroirs \u00e0 dispersion contr\u00f4l\u00e9e, \u00e9talons, prismes) pour contr\u00f4ler la bande spectrale et la dispersion, afin d\u2019obtenir dur\u00e9es d\u2019impulsion de l\u2019ordre du ps (ou sub-ps si dispositif et pompage adapt\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.researchgate.net\/publication\/367185079_Wavelength_and_pulse_width_programmable_mode-locked_Yb_fiber_laser?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\">ResearchGate<\/span><\/span><\/span><\/a><\/span><\/span>.<\/p>\n<\/li>\n<li data-start=\"1583\" data-end=\"1877\">\n<p data-start=\"1585\" data-end=\"1877\"><strong data-start=\"1585\" data-end=\"1615\">Jet ou cellule de colorant<\/strong> : le colorant Rhodamine 6G est normalement circul\u00e9 (jet ou cellule) et dissous dans un solvant appropri\u00e9 (ex. \u00e9thanol), avec concentration et longueur effective de gain qui influencent l\u2019efficacit\u00e9 et la largeur spectrale. <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.sirah.com\/accessories\/dyes\/dye-rhodamine-6g\/?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\">Sirah Lasertechnik<\/span><\/span><\/span><\/a><\/span><\/span>.<\/p>\n<\/li>\n<li data-start=\"1583\" data-end=\"1877\">\n<h3 data-start=\"1879\" data-end=\"1947\"><span style=\"color: #008080;\">2) Performances techniques typiques attendues (ordres de grandeur)<\/span><\/h3>\n<blockquote data-start=\"1948\" data-end=\"2057\">\n<p data-start=\"1950\" data-end=\"2057\">Remarque : valeurs typiques \u2014 la valeur exacte d\u00e9pend du montage, du laser pompe et des r\u00e9glages de cavit\u00e9.<\/p>\n<\/blockquote>\n<ul data-start=\"2059\" data-end=\"3014\">\n<li data-start=\"2059\" data-end=\"2203\">\n<p data-start=\"2061\" data-end=\"2203\"><strong data-start=\"2061\" data-end=\"2082\">Dur\u00e9e d\u2019impulsion<\/strong> : typiquement <strong data-start=\"2097\" data-end=\"2109\">~1\u201350 ps<\/strong> selon si le syst\u00e8me est con\u00e7u pour ~1 ps (exige optimisation pouss\u00e9e) ou pour plusieurs ps.<\/p>\n<\/li>\n<li data-start=\"2204\" data-end=\"2365\">\n<p data-start=\"2206\" data-end=\"2365\"><strong data-start=\"2206\" data-end=\"2231\">\u00c9nergie par impulsion<\/strong> : de l\u2019<strong data-start=\"2239\" data-end=\"2259\">ordre de nJ \u00e0 \u00b5J<\/strong> pour lasers synchrones picoseconde \u00e0 faible r\u00e9p\u00e9tition ; si le pompe est puissant on peut atteindre \u00b5J.<\/p>\n<\/li>\n<li data-start=\"2366\" data-end=\"2519\">\n<p data-start=\"2368\" data-end=\"2519\"><strong data-start=\"2368\" data-end=\"2390\">Taux de r\u00e9p\u00e9tition<\/strong> : fix\u00e9 par le laser pompe (quelques kHz si Q-switch\u00e9 compress\u00e9, jusqu\u2019\u00e0 plusieurs MHz ou dizaines de MHz si pompe mode-lock\u00e9).<\/p>\n<\/li>\n<li data-start=\"2520\" data-end=\"2847\">\n<p data-start=\"2522\" data-end=\"2847\"><strong data-start=\"2522\" data-end=\"2553\">Largeur spectrale \/ r\u00e9glage<\/strong> : Rhodamine 6G donne une <strong data-start=\"2579\" data-end=\"2606\">tuneabilit\u00e9 ~563\u2013597 nm<\/strong> (pic d\u2019\u00e9mission environ 574 nm) ; la bande spectrale d\u00e9pend d\u2019\u00e9talons\/inserts intracavit\u00e9 \u2014 possible de passer d\u2019une fraction de nm (pour monochromatisation) \u00e0 plusieurs nm (pour impulsions courtes). <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.sirah.com\/accessories\/dyes\/dye-rhodamine-6g\/?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\">Sirah Lasertechnik<\/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=\"2848\" data-end=\"3014\">\n<p data-start=\"2850\" data-end=\"3014\"><strong data-start=\"2850\" data-end=\"2886\">Stabilit\u00e9 et qualit\u00e9 de faisceau<\/strong> : d\u00e9pend fortement de l\u2019alignement cavit\u00e9, qualit\u00e9 du jet, stabilit\u00e9 pompe ; M\u00b2 proche de 1 possible sur syst\u00e8mes bien align\u00e9s.<\/p>\n<\/li>\n<li data-start=\"2848\" data-end=\"3014\">\n<h3 data-start=\"3016\" data-end=\"3128\"><span style=\"color: #339966;\">3) \u00c9l\u00e9ments du syst\u00e8me qu\u2019il faut v\u00e9rifier sur un <strong data-start=\"3068\" data-end=\"3126\">Spectra-Physics (ou \u00e9quivalent) Model 3500 picoseconde<\/strong><\/span><\/h3>\n<ul data-start=\"3172\" data-end=\"3828\">\n<li data-start=\"3172\" data-end=\"3303\">\n<p data-start=\"3174\" data-end=\"3303\"><strong data-start=\"3174\" data-end=\"3204\">Type de pompage recommand\u00e9<\/strong> : fr\u00e9quence et \u00e9nergie du pompe (ex. Nd:YAG 532 nm mode-lock\u00e9, r\u00e9p\u00e9tition et \u00e9nergie par pulse).<\/p>\n<\/li>\n<li data-start=\"3304\" data-end=\"3466\">\n<p data-start=\"3306\" data-end=\"3466\"><strong data-start=\"3306\" data-end=\"3339\">Configuration de mode-locking<\/strong> : s\u2019il s\u2019agit d\u2019un syst\u00e8me <em data-start=\"3367\" data-end=\"3389\">synchronously pumped<\/em> (pompe synchronis\u00e9) ou si le module int\u00e8gre un mode-locker actif \/ passif.<\/p>\n<\/li>\n<li data-start=\"3467\" data-end=\"3700\">\n<p data-start=\"3469\" data-end=\"3700\"><strong data-start=\"3469\" data-end=\"3500\">Sp\u00e9cifications constructeur<\/strong> : dur\u00e9e d\u2019impulsion nominale, \u00e9nergie\/pulse, taux de r\u00e9p\u00e9tition, tuneabilit\u00e9, stabilit\u00e9 en puissance, refroidissement, taux de circulation du colorant et recommandations chimiques (solvant, conc.).<\/p>\n<\/li>\n<li data-start=\"3701\" data-end=\"3828\">\n<p data-start=\"3703\" data-end=\"3828\"><strong data-start=\"3703\" data-end=\"3718\">Accessoires<\/strong> : \u00e9talons, filtres, pompes \u00e0 vide pour jet, circuits d\u2019\u00e9vacuation\/filtration, \u00e9l\u00e9ments de s\u00e9curit\u00e9 optique.<\/p>\n<\/li>\n<li data-start=\"3701\" data-end=\"3828\">\n<h4 data-start=\"597\" data-end=\"674\"><span style=\"color: #339966;\">Check-list de maintenance \/ alignment \u2014 Laser \u00e0 colorant picoseconde (R6G)<\/span><\/h4>\n<p data-start=\"676\" data-end=\"776\">Cette check-list vise \u00e0 t\u2019aider \u00e0 maintenir, v\u00e9rifier et optimiser les performances de ton syst\u00e8me :<\/p>\n<div class=\"_tableContainer_1rjym_1\">\n<div class=\"group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"778\" data-end=\"4132\">\n<thead data-start=\"778\" data-end=\"856\">\n<tr data-start=\"778\" data-end=\"856\">\n<th data-start=\"778\" data-end=\"796\" data-col-size=\"md\">\u00c9tape \/ domaine<\/th>\n<th data-start=\"796\" data-end=\"819\" data-col-size=\"xl\">Actions recommand\u00e9es<\/th>\n<th data-start=\"819\" data-end=\"856\" data-col-size=\"md\">Objectif \/ ce qu\u2019il faut v\u00e9rifier<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"871\" data-end=\"4132\">\n<tr data-start=\"871\" data-end=\"1144\">\n<td data-start=\"871\" data-end=\"905\" data-col-size=\"md\"><strong data-start=\"873\" data-end=\"904\">Pr\u00e9paration \/ environnement<\/strong><\/td>\n<td data-start=\"905\" data-end=\"1044\" data-col-size=\"xl\">V\u00e9rifier que l\u2019enceinte optique est propre, stable, sans vibrations ; que la temp\u00e9rature ambiante est contr\u00f4l\u00e9e, hygrom\u00e9trie acceptable.<\/td>\n<td data-col-size=\"md\" data-start=\"1044\" data-end=\"1144\">Pour \u00e9viter que des poussi\u00e8res ou fluctuations thermiques alt\u00e8rent l\u2019alignement ou la stabilit\u00e9.<\/td>\n<\/tr>\n<tr data-start=\"1145\" data-end=\"1465\">\n<td data-start=\"1145\" data-end=\"1175\" data-col-size=\"md\"><strong data-start=\"1147\" data-end=\"1174\">Circulation du colorant<\/strong><\/td>\n<td data-start=\"1175\" data-end=\"1362\" data-col-size=\"xl\">V\u00e9rifier le d\u00e9bit du colorant (pumpage continu du jet ou circulation) ; v\u00e9rifier les filtres (\u00e9viter les impuret\u00e9s) ; surveiller la photod\u00e9gradation (changement colorant si n\u00e9cessaire)<\/td>\n<td data-col-size=\"md\" data-start=\"1362\" data-end=\"1465\">Assurer que le milieu actif soit toujours homog\u00e8ne, \u00e9viter la saturation locale ou la d\u00e9coloration.<\/td>\n<\/tr>\n<tr data-start=\"1466\" data-end=\"1768\">\n<td data-start=\"1466\" data-end=\"1491\" data-col-size=\"md\"><strong data-start=\"1468\" data-end=\"1490\">Optiques \/ miroirs<\/strong><\/td>\n<td data-start=\"1491\" data-end=\"1681\" data-col-size=\"xl\">Nettoyer soigneusement les miroirs, lentilles, fen\u00eatres ; v\u00e9rifier que les miroirs sont bien align\u00e9s (tilt, position) ; v\u00e9rifier l\u2019alignement du faisceau pompe vers la cavit\u00e9 du colorant.<\/td>\n<td data-col-size=\"md\" data-start=\"1681\" data-end=\"1768\">Une d\u00e9viation microscopique peut nuire \u00e0 l\u2019oscillation ou \u00e0 la qualit\u00e9 d\u2019impulsion.<\/td>\n<\/tr>\n<tr data-start=\"1769\" data-end=\"2058\">\n<td data-start=\"1769\" data-end=\"1793\" data-col-size=\"md\"><strong data-start=\"1771\" data-end=\"1792\">Alignement cavit\u00e9<\/strong><\/td>\n<td data-start=\"1793\" data-end=\"1984\" data-col-size=\"xl\">Ajuster les miroirs de cavit\u00e9 de mani\u00e8re \u00e0 maximiser le retour dans la cavit\u00e9, aligner le mode fondamental ; v\u00e9rifier que le faisceau pompe co\u00efncide bien avec le mode de la cavit\u00e9 de gain.<\/td>\n<td data-col-size=\"md\" data-start=\"1984\" data-end=\"2058\">Pour une forte recirculation de gain et bonne extraction d\u2019impulsions.<\/td>\n<\/tr>\n<tr data-start=\"2059\" data-end=\"2423\">\n<td data-start=\"2059\" data-end=\"2124\" data-col-size=\"md\"><strong data-start=\"2061\" data-end=\"2123\">\u00c9talon, filtre ou \u00e9l\u00e9ments de s\u00e9lection de longueur d\u2019onde<\/strong><\/td>\n<td data-start=\"2124\" data-end=\"2327\" data-col-size=\"xl\">V\u00e9rifier l\u2019alignement, l\u2019angle, la qualit\u00e9 de surface, et l\u2019usure ; ajuster pour r\u00e9gler la longueur d\u2019onde d\u00e9sir\u00e9e ; s\u2019assurer que les filtres \/ \u00e9talons n\u2019introduisent pas une dispersion outre mesure.<\/td>\n<td data-start=\"2327\" data-end=\"2423\" data-col-size=\"md\">Pour bien contr\u00f4ler la bande spectrale, r\u00e9duire les pertes, \u00e9viter les r\u00e9sonances parasites.<\/td>\n<\/tr>\n<tr data-start=\"2424\" data-end=\"2704\">\n<td data-start=\"2424\" data-end=\"2453\" data-col-size=\"md\"><strong data-start=\"2426\" data-end=\"2452\">Contr\u00f4le de dispersion<\/strong><\/td>\n<td data-start=\"2453\" data-end=\"2648\" data-col-size=\"xl\">Si le laser est con\u00e7u pour impulser en picoseconde, v\u00e9rifier que les \u00e9l\u00e9ments (prismes, filtres, verres) ne g\u00e9n\u00e8rent pas de dispersion non compens\u00e9e ; ajuster le biais de dispersion si besoin.<\/td>\n<td data-start=\"2648\" data-end=\"2704\" data-col-size=\"md\">Pour \u00e9viter l\u2019\u00e9largissement temporel de l\u2019impulsion.<\/td>\n<\/tr>\n<tr data-start=\"2705\" data-end=\"3036\">\n<td data-start=\"2705\" data-end=\"2758\" data-col-size=\"md\"><strong data-start=\"2707\" data-end=\"2757\">Synchronisation \/ mode-locking (si applicable)<\/strong><\/td>\n<td data-start=\"2758\" data-end=\"2955\" data-col-size=\"xl\">Si le syst\u00e8me utilise synchronisation avec un laser pompe mode-lock\u00e9, v\u00e9rifier que la fr\u00e9quence de pompe est bien synchrone avec la cavit\u00e9 de colorant ; v\u00e9rifier le d\u00e9clenchement, phase, timing.<\/td>\n<td data-col-size=\"md\" data-start=\"2955\" data-end=\"3036\">Une mauvaise synchronisation m\u00e8ne \u00e0 des instabilit\u00e9s ou absence d\u2019impulsions.<\/td>\n<\/tr>\n<tr data-start=\"3037\" data-end=\"3329\">\n<td data-start=\"3037\" data-end=\"3065\" data-col-size=\"md\"><strong data-start=\"3039\" data-end=\"3064\">Mesure des impulsions<\/strong><\/td>\n<td data-start=\"3065\" data-end=\"3232\" data-col-size=\"xl\">Utiliser un autocorr\u00e9lateur adapt\u00e9 (ps), un photodiode rapide, un oscilloscope \u00e0 bande passante suffisante ; mesurer dur\u00e9e d\u2019impulsion, forme, stabilit\u00e9, intensit\u00e9.<\/td>\n<td data-col-size=\"md\" data-start=\"3232\" data-end=\"3329\">Pour diagnostiquer si les impulsions sont proches de la th\u00e9orie ou si elles sont d\u00e9t\u00e9rior\u00e9es.<\/td>\n<\/tr>\n<tr data-start=\"3330\" data-end=\"3629\">\n<td data-start=\"3330\" data-end=\"3359\" data-col-size=\"md\"><strong data-start=\"3332\" data-end=\"3358\">Stabilit\u00e9 \/ monitoring<\/strong><\/td>\n<td data-col-size=\"xl\" data-start=\"3359\" data-end=\"3559\">Enregistrer les puissances de sortie, les \u00e9nergies par impulsion, la d\u00e9rive au fil du temps ; surveiller les fluctuations ; noter les conditions (temp\u00e9rature, r\u00e9glage optique) \u00e0 diff\u00e9rents moments.<\/td>\n<td data-col-size=\"md\" data-start=\"3559\" data-end=\"3629\">Pour rep\u00e9rer des d\u00e9rives ou tendances de performance d\u00e9croissante.<\/td>\n<\/tr>\n<tr data-start=\"3630\" data-end=\"3882\">\n<td data-start=\"3630\" data-end=\"3665\" data-col-size=\"md\"><strong data-start=\"3632\" data-end=\"3664\">S\u00e9curit\u00e9 et contr\u00f4le optique<\/strong><\/td>\n<td data-col-size=\"xl\" data-start=\"3665\" data-end=\"3811\">V\u00e9rifier les interlocks, volets de s\u00e9curit\u00e9, protections laser (goggles adapt\u00e9s) ; v\u00e9rifier les syst\u00e8mes de purge ou obturation en cas d\u2019arr\u00eat.<\/td>\n<td data-col-size=\"md\" data-start=\"3811\" data-end=\"3882\">La s\u00e9curit\u00e9 est cruciale, surtout avec des lasers puls\u00e9s puissants.<\/td>\n<\/tr>\n<tr data-start=\"3883\" data-end=\"4132\">\n<td data-start=\"3883\" data-end=\"3916\" data-col-size=\"md\"><strong data-start=\"3885\" data-end=\"3915\">Documentation &amp; historique<\/strong><\/td>\n<td data-start=\"3916\" data-end=\"4046\" data-col-size=\"xl\">Tenir un journal de tous les r\u00e9glages (positions miroirs, angles \u00e9talons, etc.), dates de maintenance, changements de colorant.<\/td>\n<td data-start=\"4046\" data-end=\"4132\" data-col-size=\"md\">Aide \u00e0 revenir \u00e0 une configuration stable ant\u00e9rieure ou diagnostiquer des d\u00e9rives.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div><\/section><\/div><div class=\"flex_column av_one_full  flex_column_div av-zero-column-padding first  avia-builder-el-6  el_after_av_one_full  el_before_av_textblock  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\" ><h4>Premier essai je travail en r\u00e9gime continu . Le pompage du colorant Rhodamine6G \u00e0 2. 10-3 Mol \/ L dissous dans de l&rsquo;ethyl\u00e8ne glycol. Le pompage est \u00e9ffectuer au moyen d&rsquo;un laser VERDI 10 .<\/h4>\n<h4>J&rsquo;obtient l&rsquo;effet laser d\u00e9j\u00e0 avec une puissance pompe de 450mW !<\/h4>\n<h4>Ceci gr\u00e2ce \u00e0 la tr\u00e8s haute puissance de concentration du faisceau pompe TEM00 et au mode longitudanal unique de ce laser. La puissance maximum est de 10W continu.<\/h4>\n<h4>La deuxi\u00e8me phase consiste \u00e0 travailler en r\u00e9gime picoseconde par une synchronisation de phase durant le pompage.<\/h4>\n<h4><b>Pompage synchrone<\/b><br \/>\nLe syst\u00e8me laser \u00e0 colorant (sync-pompe) comprend un laser pompe \u00e0 mode verrouill\u00e9 et un laser \u00e0 colorant dont la cavit\u00e9 est \u00e9tendue de sorte que l&rsquo;espacement inter-modes est un multiple entier de la fr\u00e9quence de verrouillage du laser pompe.<br \/>\nDans cette configuration, chaque impulsion laser pompe entrant dans le jet de colorant le bord d&rsquo;attaque am\u00e8ne la population des mol\u00e9cules de colorant excit\u00e9es au-del\u00e0 du seuil de laser. Parce que la cavit\u00e9 de la pompe et la cavit\u00e9 du colorant sont appari\u00e9es, le laser \u00e0 colorant va \u00e9mettre des pulses pico voir femtosecondes.<\/h4>\n<\/div><\/section><\/div><\/p>\n<section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><p>Cliquer ici pour ajouter votre propre texte<\/p>\n<\/div><\/section>\n<div class=\"flex_column av_one_full  flex_column_div av-zero-column-padding first  avia-builder-el-9  el_after_av_textblock  el_before_av_one_full  column-top-margin\" style='border-radius:0px; '><div  class='avia-image-container  av-styling-    avia-builder-el-10  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-1138 avia-img-lazy-loading-not-1138 avia_image' src=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2022\/12\/20221217_174657-scaled.jpg\" alt='' title='20221217_174657' height=\"1440\" width=\"2560\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2022\/12\/20221217_174657-scaled.jpg 2560w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2022\/12\/20221217_174657-300x169.jpg 300w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2022\/12\/20221217_174657-1030x579.jpg 1030w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2022\/12\/20221217_174657-768x432.jpg 768w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2022\/12\/20221217_174657-1536x864.jpg 1536w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2022\/12\/20221217_174657-2048x1152.jpg 2048w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2022\/12\/20221217_174657-1500x844.jpg 1500w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2022\/12\/20221217_174657-705x397.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-11  el_after_av_one_full  el_before_av_one_full  column-top-margin\" style='border-radius:0px; 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'><div  class='avia-image-container  av-styling-    avia-builder-el-22  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-1163 avia-img-lazy-loading-not-1163 avia_image' src=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2022\/12\/Capture-decran-2022-12-18-102820.jpg\" alt='' title='Capture d\u2019\u00e9cran 2022-12-18 102820' height=\"714\" width=\"585\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2022\/12\/Capture-decran-2022-12-18-102820.jpg 585w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2022\/12\/Capture-decran-2022-12-18-102820-246x300.jpg 246w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2022\/12\/Capture-decran-2022-12-18-102820-578x705.jpg 578w\" sizes=\"(max-width: 585px) 100vw, 585px\" \/><\/div><\/div><\/div><\/div>\n<div class=\"flex_column av_one_half  flex_column_div av-zero-column-padding   avia-builder-el-23  el_after_av_one_half  avia-builder-el-last  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-1164 avia-img-lazy-loading-not-1164 avia_image' src=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2022\/12\/Capture-decran-2022-12-18-102903.jpg\" alt='' title='Capture d\u2019\u00e9cran 2022-12-18 102903' height=\"699\" width=\"587\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2022\/12\/Capture-decran-2022-12-18-102903.jpg 587w, https:\/\/www.swissrocketman.fr\/Wordpress\/wp-content\/uploads\/2022\/12\/Capture-decran-2022-12-18-102903-252x300.jpg 252w\" sizes=\"(max-width: 587px) 100vw, 587px\" \/><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":1138,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-1132","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lasers-liquides"],"_links":{"self":[{"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1132","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=1132"}],"version-history":[{"count":21,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1132\/revisions"}],"predecessor-version":[{"id":3586,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1132\/revisions\/3586"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/index.php?rest_route=\/wp\/v2\/media\/1138"}],"wp:attachment":[{"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1132"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1132"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1132"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}