SCAN LASER Russian patent published in 1998 - IPC

FIELD: systems of laser location, communication, information processing, transmission and storage, laser technological installations for high- precision machining of materials. SUBSTANCE: proposed scan laser has active element located in resonator with two mirrors, first one being completely reflecting, spatial-time light modulator manufactured in the form of interresonator electrically controlled plate with linear controlling electrodes installed near second mirror, quarter- wavelength plate placed between spatial-time light modulator and active element, total polarizer which transmission plane is arranged at angle of 45 deg to linear controlling electrodes of spatial-time light modulator positioned between quarter-wavelength plate and active element and pumping source. Novelty of proposed scan laser lies in confocal manufacture of resonator with totally reflecting second mirror and in fabrication of polarizer in the form of polarization divider. Second quarter-wavelength plate and third totally reflecting mirror are installed in path of reflected component of radiation which form together with first mirror confocal resonator. Third quarter- wavelength plate is positioned between polarizer and active element. EFFECT: expanded application field and improved operational characteristics of scan laser. 3 cl, 3 dwg