Optical homogeneity of the active media of cw chemical HF(DF) lasers

摘要

The optical homogeneity of the active media of cw chemical lasers was investigated by interferometry. A study was made of how the optical quality of the active media was influenced by the characteristics of various configurations of nozzle arrays (classical nozzle—nozzle configuration, configurations with discrete supply of the secondary fuel to the supersonic channel, and those with radial expansion or with a honeycomb structure). The dependences of the integral optical homogeneity criterion, the Strehl number, on the main operational parameters of a laser were determined. The optical homogeneity of the active medium was reduced by intensification of the processes which improved the operational parameters.