SCANNING LASER Russian patent published in 1997 - IPC

FIELD: laser location and communication engineering, data processing, transmission and storage; laser plants for high-precision treatment of metals. SUBSTANCE: scanning laser is provided, in addition, with hollow polarizer placed between cavity mirror and lens, and quarter-wave plate installed between cavity mirror and polarizer; linear gate electrodes of plate of time-space optical modulator are inclined through 45 deg. to polarizer transmission plane; used as active element is medium of several oscillation wavelengths; thickness D of quarter-wave plate is chosen from definite condition; lens is built up of two achromatic lenses for working oscillation wavelengths. EFFECT: improved design, enlarged functional capabilities. 9 cl, 9 dwg