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Proceedings Paper

CO2 gas dynamic laser driven by methane-air combustion
Author(s): Yoshinori Itaya; Yousuke Kawamura; Noriyuki Kobayashi; Chihomi Takami; Masanobu Hasatani
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Paper Abstract

The carbon-dioxide gas dynamic laser driven by methane-air combustion in an unsteady flame propagation combustor was proposed for the purpose of industrial application. The effect of coexisting water with high concentration on the population balance between carbon-dioxide(001) and carbon-dioxide(100) levels of vibration-rotation modes was theoretically analyzed. The analysis showed that the population inversion between the two levels can take place with the methane-air combustion at stoichiometric ratio if the gas flow is accelerated to Mach number 5.0. The population inversion was confirmed by the experimental measurement of the small-signal gain carried out applying the unsteady flame propagation combustion. High emission power of about 2.5 kW with the path length of 0.3 m may be expected from the magnitude of the gain.

Paper Details

Date Published: 4 April 1997
PDF: 4 pages
Proc. SPIE 3092, XI International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (4 April 1997); doi: 10.1117/12.270106
Show Author Affiliations
Yoshinori Itaya, Nagoya Univ. (Japan)
Yousuke Kawamura, Nagoya Univ. (Japan)
Noriyuki Kobayashi, Nagoya Univ. (Japan)
Chihomi Takami, Toho Gas Co., Ltd. (Japan)
Masanobu Hasatani, Nagoya Univ. (Japan)


Published in SPIE Proceedings Vol. 3092:
XI International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference
Denis R. Hall; Howard J. Baker, Editor(s)

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