Pressure recovery in supersonic gas lasers

Robert F. Walter; Robert A. O'Leary

doi:10.1117/12.144659

4 May 1993 Pressure recovery in supersonic gas lasers

Robert F. Walter, Robert A. O'Leary

Proceedings Volume 1810, 9th International Symposium on Gas Flow and Chemical Lasers; (1993) https://doi.org/10.1117/12.144659
Event: Ninth International Symposium on Gas Flow and Chemical Lasers, 1992, Heraklion, Greece

Abstract

The basic challenge in the design of a pressure recovery system for a supersonic gas laser arises from the fact that the cavity pressure is quite low: 50 - 70 Torr for a CO₂ gasdynamic laser (GDL) and as low as 4 Torr for a chemical oxygen-iodine laser (COIL) system. The purpose of the pressure recovery system is to increase the pressure from its value in the supersonic cavity to one which allows the laser gas to be exhausted into the atmosphere. Two types of pressure recovery systems which are of primary interest for supersonic gas lasers are diffusers and ejectors. In this paper we derive some performance limits and examine the characteristics of both types of devices.

Citation Download Citation

Robert F. Walter and Robert A. O'Leary "Pressure recovery in supersonic gas lasers", Proc. SPIE 1810, 9th International Symposium on Gas Flow and Chemical Lasers, (4 May 1993); https://doi.org/10.1117/12.144659

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