{"id":10802,"date":"2026-08-21T11:59:29","date_gmt":"2026-08-21T09:59:29","guid":{"rendered":"https:\/\/www.swissrocketman.fr\/Wordpress\/?p=10802"},"modified":"2026-08-21T13:55:48","modified_gmt":"2026-08-21T11:55:48","slug":"laser-dpss-q-switch-ndylf-spectra-physics-7960","status":"publish","type":"post","link":"https:\/\/www.swissrocketman.fr\/Wordpress\/laser-dpss-q-switch-ndylf-spectra-physics-7960\/","title":{"rendered":"Laser DPSS q-switch Nd:YLF SPECTRA PHYSICS 7960"},"content":{"rendered":"
<\/div><\/div><\/div><\/div>\n

Ce laser DPSS se compose d’une t\u00eate laser, d’un g\u00e9n\u00e9rateur HF 27.12MHz pour exciter le modulateur acousto-optique permettant de travailler en mode d\u00e9clench\u00e9, d’une alimentation pour la diode laser et le TEC.
\nLa t\u00eate laser comprends un cristal Nd:YLF de 5mm de diam\u00e8tre pomp\u00e9 dans une cavit\u00e9 hemi-sph\u00e9rique sur une des faces du barreau par une diode laser fibr\u00e9e \u00e0 810nm.
\nUn Q-switch acousto-optique est plac\u00e9 entre le barreau Nd:YLF et le miroir de sortie.
\nLa face d’entr\u00e9e pompe du cristal et le miroir de sortie forme la cavit\u00e9 laser. La lumi\u00e8re pompe est coupl\u00e9e dans le barreau par une lentille qui couple le faisceau pompe avec le volume du mode fondamental TEM00.
\nLe q-switch est l’\u00e9l\u00e9ment qui pr\u00e9sente une perte variable dans la cavit\u00e9 .Un g\u00e9n\u00e9rateur RF permet de contr\u00f4ler les pulses lasers entre 1Hz et 50kHz.Des pulses uniques peuvent \u00eatre g\u00e9n\u00e9r\u00e9s.
\nLe q-switch consiste en un bloc de verre de qualit\u00e9 optique sur lequel sont coll\u00e9s des transducteurs produisant des ondes acoustiques dans le verre. Ces ondes acoustiques produisent des variation d’indice de r\u00e9fraction qui agissent comme un r\u00e9seau de diffraction et qui produisent une forte perte dans la cavit\u00e9 . Quand le q-switch est excit\u00e9 il n’y a pas d’effet<\/span>\u00a0<\/span>laser.Quand on coupe l’excitation de la cellule q-switch une oscillation laser prends naissance dans la cavit\u00e9 qui sort sous forme d’une impulsion g\u00e9ante! \u00a0<\/span> <\/span><\/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>
<\/div><\/div><\/div><\/div>
<\/div><\/div><\/div><\/div>
<\/div><\/div><\/div><\/div>
<\/div><\/div><\/div><\/div>
<\/div><\/div><\/div><\/div>
<\/div><\/div><\/div><\/div>
<\/div><\/div><\/div><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":10811,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-10802","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lasers-a-solides"],"_links":{"self":[{"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-json\/wp\/v2\/posts\/10802","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=10802"}],"version-history":[{"count":6,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-json\/wp\/v2\/posts\/10802\/revisions"}],"predecessor-version":[{"id":10829,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-json\/wp\/v2\/posts\/10802\/revisions\/10829"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-json\/wp\/v2\/media\/10811"}],"wp:attachment":[{"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-json\/wp\/v2\/media?parent=10802"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-json\/wp\/v2\/categories?post=10802"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.swissrocketman.fr\/Wordpress\/wp-json\/wp\/v2\/tags?post=10802"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}