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Diatomic gasdynamic lasers.Predictions from a numerical model of the vibrational relaxation of anharmonic diatomic oscillators in supersonic expansions are used to show the extent to which the small anharmonicity of gases like CO can cause significant overpopulations of upper vibrational states. When mixtures of CO and N2 are considered, radiative gain on many of the vibration-rotation transitions of CO is predicted. Experiments are described that qualitatively verify the predictions by demonstrating laser oscillation in CO-N2 expansions. The resulting CO-N2 gasdynamic laser displays performance characteristics that equal or exceed those of similar CO2 lasers.
Document ID
19730034709
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Mckenzie, R. L.
(NASA Ames Research Center Moffett Field, Calif., United States)
Date Acquired
August 7, 2013
Publication Date
December 1, 1972
Publication Information
Publication: Physics of Fluids
Volume: 15
Subject Category
Masers
Accession Number
73A19511
Distribution Limits
Public
Copyright
Other

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