Gas-dynamically cooled CO laser with rf-excitation: design and performance

Hartwig von Buelow; Eberhard Zeyfang

doi:10.1117/12.25957

1 February 1991 Gas-dynamically cooled CO laser with rf-excitation: design and performance

Hartwig von Buelow, Eberhard Zeyfang

Proceedings Volume 1397, 8th Intl Symp on Gas Flow and Chemical Lasers; (1991) https://doi.org/10.1117/12.25957
Event: Eighth International Symposium on Gas-Flow and Chemical Lasers, 1990, Madrid, Spain

Abstract

A gasdynamically cooled CO - laser with a dielectrically stabilized RF -discharge in the subsonic region is described and experimental results are presented. The gas is excited at pressures of about 500 mbar in a discharge tube with a rectangular cross - section. Then, the laser gas is cooled to a temperature of approximately 90 K by an adiabatic expansion in a two - dimensional supersonic nozzle. After extraction of laser energy in a triple pass resonator the gas is recompressed in a supersonic diffuser and by a Roots pump system. The dependance of laser power on discharge pressure and resonator design is presented. Experimental results of the diffuser performance are also discussed.

Citation Download Citation

Hartwig von Buelow and Eberhard Zeyfang "Gas-dynamically cooled CO laser with rf-excitation: design and performance", Proc. SPIE 1397, 8th Intl Symp on Gas Flow and Chemical Lasers, (1 February 1991); https://doi.org/10.1117/12.25957

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