Novel aerodynamic window with a pump cavity and a supersonic jet

Junquan Shen; Keming Du; Peter Loosen

doi:10.1117/12.20544

1 October 1990 Novel aerodynamic window with a pump cavity and a supersonic jet

Junquan Shen, Keming Du, Peter Loosen

Author Affiliations +

Proceedings Volume 1276, CO2 Lasers and Applications II; (1990) https://doi.org/10.1117/12.20544
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands

Abstract

In order to minimize the mass flow rate and the optical distortion of aerodynamic windows, a novel type with a pump cavity and a supersonic as jet has been deve- loped. Prototypes of this window with an aperture of 4x4 mm have been designed and fabricated. With it, a 80 mbar laser cavity can be sealed up using a gas jet of 5 g/s mass rate at 5.4 bar while the pressue in pump cavity is about 600 mbar and the volume to be pumped is less than 7.2 m /h. It can be operated stably if the pressure variation is less than 25 mbar. A wide range of operation pressure of the laser cavity can be realized easily by adjusting the supply pressure for the gas jet and the pressure in the pump cavity.

Citation Download Citation

Junquan Shen, Keming Du, and Peter Loosen "Novel aerodynamic window with a pump cavity and a supersonic jet", Proc. SPIE 1276, CO2 Lasers and Applications II, (1 October 1990); https://doi.org/10.1117/12.20544

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