LASER RADIATION CONTROL SYSTEM (VERSIONS) Russian patent published in 2011 - IPC H01S3/10 G02F1/11 

FIELD: physics.

SUBSTANCE: system has series-arranged laser, a polarisation light-splitting unit, after which two anisotropic acousto-optical cells turned 90° relative each other, two prisms and a pair of optical wedge are placed in series in each channel. Further, an adder prism and a beam-splitter prism are placed in series. The system also has a telescope, a measurement channel, which includes a polarisation light-splitting unit, two pairs of optical wedges, a telescopic system and a position-sensitive photodetector. The measurement channel uses a second position-sensitive photodetector. Also, the position-sensitive photodetectors are electrically connected to a computer which is connected to acousto-optical cell control units. In the second version, the system has in each channel, series-arranged anisotropic acousto-optical cells, a prism and a pair of optical wedges, where there are phase half-wave plates (λ/2) in one channel before and after the anisotropic acousto-optical cell.

EFFECT: capacity for fast and accurate control of a laser beam without increase in its divergence.

2 cl, 3 dwg