DEVICE FOR EXTENDING THE LIFETIME OF A NON-LINEAR OPTICAL SYSTEM SUBJECTED TO RADIATION OF AN INTENSE LASER BEAM AND NON-LINEAR OPTICAL SOURCE COMPRISING SAID DEVICE

摘要

The present invention relates to a device for extending the lifetime of an optical system (19) which is a non-linear frequency converter subjected to the radiation of an intense laser beam and comprising two blades (2, 3) with flat and parallel faces. inclined on the beam and transverse rotation means of said blades (2, 3) adapted to change the angle of inclination of the blade 1 over an angular range (i +/- δi) to move the incident beam relative to the system optical (19), while minimizing the amplitude of displacement of the output beam (37, 47) over the angular inclination range (i +/- δi) of the first blade. The invention also relates to the application of the device in a nonlinear optical source comprising one or more non-linear crystals (1, 16).