Ultrasensitive diode laser direct absorption measurements: applications to mass flux flight instrumentation

Mark G. Allen; Karen L. Carleton; Steven J. Davis; Daniel A. Palombo

doi:10.1117/12.171281

18 March 1994 Ultrasensitive diode laser direct absorption measurements: applications to mass flux flight instrumentation

Mark G. Allen, Karen L. Carleton, Steven J. Davis, Daniel A. Palombo

Author Affiliations +

Proceedings Volume 2122, Laser Applications in Combustion and Combustion Diagnostics II; (1994) https://doi.org/10.1117/12.171281
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

A numerical method for the analysis of the fast axial flow glow discharge CO₂ laser has been developed. The method is based on the self-consistent solution to the 1-D steady-state glow discharge equations, the gas dynamic equations, and the vibrational relaxation equations. The discharge equations include the continuity ones for the electrons, the positive and negative ions, and Poisson's equation for the electric field. The three-mode relaxation model for the vibrational kinetics and the plane-parallel optical resonator model have been used. This approach does not require previous assignment of the discharge power distribution and enables obtaining the discharge structure including the near-electrode regions in addition to the laser characteristics.

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Mark G. Allen, Karen L. Carleton, Steven J. Davis, and Daniel A. Palombo "Ultrasensitive diode laser direct absorption measurements: applications to mass flux flight instrumentation", Proc. SPIE 2122, Laser Applications in Combustion and Combustion Diagnostics II, (18 March 1994); https://doi.org/10.1117/12.171281

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