DOUBLE-REFRACTION SELECTOR OF LASER GENERATION WAVE LENGTH Russian patent published in 1994 - IPC

FIELD: quantum electronics. SUBSTANCE: selector has a stack of plane-parallel plates of single axis crystal, placed by Brewster's angle relative to an optical axis of the device. Crystal optical axis of the plates are oriented relative to normals to their surfaces by the same angle β, defined from relation , where n - mean refraction factor of the crystalline material. The selector provides wide-range readjustment of the laser at fluctuation of angle φ in a very narrow band from 45 degrees. EFFECT: maximum selectivity at readjustment of the whole working range of the laser. 1 cl, 3 dwg