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

摘要

The present invention relates to a device for extending the service life of a frequency-converting non-linear optical system (19) subjected to the radiation of an intense laser beam and including two blades (2, 3) with flat and parallel surfaces angled on the beam and means for transverse rotation of said blades (2, 3) suitable for changing the angle of inclination of the first blade in an angular range (i2○ ± δi2) to move the incident beam relative to the optical system (19), while minimising the amplitude of movement of the output beam (37, 47) on the angular inclination range (i2○ ± δi2) of the first blade. The invention also relates to the application of the device in a non-linear optical source including one or more non-linear crystals (1, 16).