{"id":10108,"date":"2026-08-11T16:49:14","date_gmt":"2026-08-11T14:49:14","guid":{"rendered":"https:\/\/www.swissrocketman.fr\/Wordpress\/?p=10108"},"modified":"2026-08-11T20:39:29","modified_gmt":"2026-08-11T18:39:29","slug":"laser-dye-spectra-physics-375-a-blockage-de-modes","status":"publish","type":"post","link":"https:\/\/www.swissrocketman.fr\/Wordpress\/laser-dye-spectra-physics-375-a-blockage-de-modes\/","title":{"rendered":"Laser dye Spectra Physics 375 \u00e0 blockage de modes"},"content":{"rendered":"
<\/div><\/div><\/div><\/div>\n

Laser Dye pomp\u00e9 par un laser Ion Argon \u00e0 modes bloqu\u00e9s<\/b><\/i><\/p>\n

En utilisant le laser \u00e0 jet de colorant SPECTRA PHYSICS Model 375 pomp\u00e9 par un laser \u00e0 ion d’argon on peut obtenir des pulses picosecodes ( 5 – 7ps).<\/p>\n

Pour ce la il faut \u00e9quip\u00e9 le laser pompe (laser \u00e0 argon) d’un prisme muni d’un transducteur piezo-\u00e9lectrique permettant de faire fonctionner le laser pompe en modes bloqu\u00e9s \u00ab\u00a0mode locked\u00a0\u00bb sortant des pulses de 200ps s\u00e9par\u00e9s de 2L\/c (longueur de la cavit\u00e9 du laser \u00e0 argon).<\/p>\n

On cr\u00e9er un 2 \u00e8me r\u00e9sonateur pour le laser Dye jet 375 ayant la m\u00eame longueur que le r\u00e9sonateur du laser pompe pour cr\u00e9er un pompage \u00e0 synchronisation dans le jet de colorant.<\/p>\n

Pour cela le miroir de sortie du laser dye est maintenu \u00e0 une distance 2L\/c par une barre de quartz isol\u00e9e thermiquement pour \u00e9vit\u00e9 que l’onde de pompe se d\u00e9place dans le mince jet de colorant 50 microns.<\/p>\n<\/div><\/section><\/div>\n

<\/div><\/div><\/div><\/div>\n
<\/div><\/div><\/div><\/div>\n
<\/div><\/div><\/div><\/div>\n
<\/div><\/div><\/div><\/div>\n
<\/div><\/div><\/div><\/div>\n
<\/div><\/div><\/div><\/div>\n

pour r\u00e9aliser ce montage je vais utiliser mon laser \u00e0 argon COHERENT model INNOVA 70 de 5W sur lequel je monte un prism muni d’un piezo qui va faire travailler le laser en modes bloqu\u00e9s ce qui va me produire des pulses de 100W et 200ps toute les 7ns (20nJ par pulse)
\nIl me manque le g\u00e9n\u00e9rateur de 82MHz 3W pour la g\u00e9n\u00e9ration des ondes acoustique dans le prism.<\/p>\n

support du miroir de sortie du laser \u00e0 colorant maintenu par un tube de quartz \u00e0 la distance de 2L\/c pour travailler en synchronisation avec le laser pompe \u00e0 ion d’argon \u00ab\u00a0mode locked\u00a0\u00bb<\/p>\n

Les caract\u00e9ristiques du faisceau de sortie sont :
\nDur\u00e9e de pulse : 20ps
\nPuissance cr\u00eate : 1.5kW
\nEnergie :\u00a0\u00a0 30nJ
\nR\u00e9p\u00e9tition : 4MHz;800kHz;400kHz;80kHz;40kHz;8kHz<\/p>\n<\/div><\/section><\/div>\n

<\/div><\/div><\/div><\/div>\n
<\/div><\/div><\/div><\/div>\n
<\/div><\/div><\/div><\/div>\n
<\/div><\/div><\/div><\/div>\n
<\/div><\/div><\/div><\/div>\n
<\/div><\/div><\/div><\/div>\n
<\/div><\/div><\/div><\/div>\n
<\/div><\/div><\/div><\/div>\n
<\/div><\/div><\/div><\/div>\n
<\/div><\/div><\/div><\/div>\n
<\/div><\/div><\/div><\/div>\n
<\/div><\/div><\/div><\/div>\n
<\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":10111,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-10108","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lasers-liquides"],"_links":{"self":[{"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-json\/wp\/v2\/posts\/10108","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-json\/wp\/v2\/comments?post=10108"}],"version-history":[{"count":16,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-json\/wp\/v2\/posts\/10108\/revisions"}],"predecessor-version":[{"id":10147,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-json\/wp\/v2\/posts\/10108\/revisions\/10147"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-json\/wp\/v2\/media\/10111"}],"wp:attachment":[{"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-json\/wp\/v2\/media?parent=10108"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-json\/wp\/v2\/categories?post=10108"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-json\/wp\/v2\/tags?post=10108"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}