LASER RADIATION MODULATOR Russian patent published in 2013 - IPC H01S3/10 G02B26/02 

FIELD: physics.

SUBSTANCE: laser radiation modulator has a laser, a relief diffraction grating with a rectangular profile, which reflects a beam of the modulated laser radiation, the depth of which is greater than a quarter of the wavelength of the modulated laser radiation, and a platform which is connected to an electromechanical vibrator mounted on a fixed base. The relief diffraction grating is made from plates which are formed into stationary groups and groups of movable plates capable of back-and-forth movement, placed in spaces between plates of the stationary group, the ends of which are shifted with respect to the ends of the stationary group in a direction which is perpendicular to surfaces facing the laser. The stationary group is connected to the base by a precision adjustment mechanism, and the group of movable plates is placed on the platform which is connected by an elastic suspension to the base and the electromechanical vibrator. The ends of plates facing the laser beam have a flat surface which reflects laser radiation.

EFFECT: high accuracy of positioning a laser beam.

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