Abstract
An experimental investigation was made of a self-contained supersonic cw chemical HF laser with a 40 cm X 11 cm three- jet nozzle array and the nozzle-nozzle-nozzle configuration. Such a nozzle array made it possible to form an active medium approximately 12 cm long and of high optical quality. The use of a wide-aperture stable optical cavity resulted in generation of a laser beam of square (11 cm X 11 cm) cross section. A specific output energy of approximately 80 Jg<SUP>-1</SUP> was reached.
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