Short pulse laser arrangement

Details Short pulse laser arrangement Short pulse laser arrangement

H - Electricity

01

S

H01S 3/098 (2006.01) H01S 3/081 (2006.01)

Patent

CA 2545342

A short pulse laser device (11) with, preferably, passive mode coupling, comprising a resonator (12) containing a laser crystal (14) and several mirrors (M1-M7; OC), whereby one thereof forms a pump beam injection mirror (M1) and a laser beam decoupling mirror (OC), also comprising a multiple reflection telescope (18) which increases resonator length. During operation, the resonator (12) has a positive average dispersion for a specific wavelength frequency range. The positive average dispersion of the resonator (12) is adjusted with the aid of the mirrors (M1-M7, OC) of the resonator (12), whereby at least some of said mirrors are embodied as dispersive mirrors.

L'invention concerne un dispositif laser à impulsions courtes (11) présentant un couplage de modes de préférence passif, lequel dispositif est pourvu d'un résonateur (12) contenant un cristal laser (14) et plusieurs miroirs (M1-M7 ; OC), parmi lesquels un miroir constitue un miroir d'entrée de faisceau de pompage (M1) et un autre constitue un miroir de sortie de faisceau laser (OC), et d'un télescope à réflexion multiple (18) augmentant la longueur du résonateur, lequel résonateur présente, en service, une dispersion moyenne positive sur une gamme de longueurs d'onde concernée. Cette invention se caractérise en ce que le réglage de la dispersion moyenne positive du résonateur (12) est effectué au moyen des miroirs (M1-M7, OC) du résonateur (12), parmi lesquels au moins quelques-uns sont conçus sous forme de miroirs dispersifs.

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