SYSTEM FOR CIRCULATION OF WORKING MEDIUM OF GAS LASER Russian patent published in 2020 - IPC H01S3/36 H01S3/953 

FIELD: laser engineering.

SUBSTANCE: system for circulation of working medium of gas laser includes laser chamber and two gas circuits with injectors passing through internal volume of chamber with formation of channels so that inside the chamber the first channel is separated from the second channel by walls with formation of structure of pipe type in pipe. First gas circuit serves to circulate working medium including working fluid vapors and buffer gas while second gas circuit serves to circulate buffer gas. First circuit comprises a source of vapors of the working substance, and the second circuit comprises a device for cleaning of working medium vapors. Walls have through process holes, through which contact of gas flows of both channels is provided. Elements of the first and second gas circuits are equipped with heaters. First gas circuit includes additionally two controlled three-way valves installed at the inlet and outlet of the laser chamber, and a bypass circuit arranged between the three-way valves, such that in one of the three-way valves positions provide the working medium flow along the bypass circuit, through the working fluid vapors source, the first circuit part including the pump, bypassing the chamber inner area, and in the other position of the three-way valves, the working medium flow is provided through the chamber inner area, the working fluid vapor source and the first circuit including the pumping unit.

EFFECT: technical result consists in prevention of growth of concentration of working substance in composition of working medium of laser during operation of source of optical pumping caused by heating of structural elements of central part of laser chamber, which increases experimental possibilities of using this device.

4 cl, 10 dwg