{"id":7244,"date":"2026-06-18T11:56:47","date_gmt":"2026-06-18T09:56:47","guid":{"rendered":"https:\/\/www.swissrocketman.fr\/Wordpress\/?p=7244"},"modified":"2026-06-18T13:03:40","modified_gmt":"2026-06-18T11:03:40","slug":"50wcw-co2-laser-avec-grating-accordable","status":"publish","type":"post","link":"https:\/\/www.swissrocketman.fr\/Wordpress\/50wcw-co2-laser-avec-grating-accordable\/","title":{"rendered":"50Wcw CO2 laser avec grating accordable PL5"},"content":{"rendered":"
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Ce laser \u00e0 gaz carbonique de plus de 50W peut travailler en r\u00e9gime continu ou puls\u00e9.<\/span><\/span>
\nIl est muni d’un r\u00e9seau de diffraction (grating) permettant de choisir parmis 80 raies d’\u00e9mission entre 9.1 et 10.9 micron. Il travail en r\u00e9gime monomode TEM00 et est muni d’un miroir de sortie mont\u00e9 sur un actuateur piezo-\u00e9lectrique permettant de stabiliser la longueur de la cavit\u00e9 au moyen d’un g\u00e9n\u00e9rateur \u00ab\u00a0Laser Frequency Stabiliser\u00a0\u00bb Model 209. Avec cette option la stabilit\u00e9 de fr\u00e9quence est de 100kHz (opto-galvanique Lamb-dip).<\/span><\/span>
\nLe faisceau fait 7.5mm de diam\u00e8tre avec une divergence de 3.5mrad et est polaris\u00e9 vertical. Le tube de d\u00e9charge est muni \u00e0 chaque extr\u00e9mit\u00e9 de fen\u00eatres en ZnSe \u00e0 l’incidence de Brewster et le tube de d\u00e9charge est ondul\u00e9 de mani\u00e8re \u00e0 \u00e9viter de produire des modes transverses autre que le TEM00 !<\/span><\/span>
\nEn r\u00e9gime puls\u00e9 il peut travailler de 1Hz \u00e0 1kHz avec des pulses carr\u00e9s, triangulaires et sinusoidaux gr\u00e2ce \u00e0 une triode HT.<\/span><\/span>
\nIl est \u00e9galement possible de travailler en Q-switching avec une cellule SF<\/span><\/span>6<\/span><\/span>\u00a0<\/span>permettant d’obtenir des pulse de 200ns !<\/span><\/span>
\nCe laser peut \u00e9galement servir \u00e0 pomper optiquement des gaz polaires comme le m\u00e9thanol, l’acide formique, etc.. pour obtenir un laser FIR(Far IfraRed) \u00e9mission de 40 micron \u00e0 1.2mm ( 7.5THz-0.25THz).<\/span><\/span> <\/span><\/h4>\n<\/div><\/section><\/div>\n
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