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Proceedings Paper

Thermal instability of resonance absorption in inactive regions of CW CO2 lasers
Author(s): Michail G. Galushkin; Vladimir S. Golubev; Alexandre M. Zabelin; Valentina Ye. Zavalova; Vladislav Ya. Panchenko
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Paper Abstract

In the optical resonators of industrial CO2-lasers there exist stagnation zones with unexcited working mixture. In these regions the beam is partially absorbed by carbon dioxide; this results in variation of the laser beam energy and spectral characteristics. In this connection, of practical interest is the study of the unexcited mixture heating stability under various procedures of heat removal: gas mixture pumping, heat conductivity, or natural convection. For the optical thermal instability under consideration, there is an effect of thermal runaway known in chemical burning theory and emerging under self-acceleration heat release, when it cannot be compensated by heat removal.

Paper Details

Date Published: 4 May 1993
PDF: 5 pages
Proc. SPIE 1810, 9th International Symposium on Gas Flow and Chemical Lasers, (4 May 1993); doi: 10.1117/12.144607
Show Author Affiliations
Michail G. Galushkin, Industrial Lasers R&D Ctr. (Russia)
Vladimir S. Golubev, Industrial Lasers R&D Ctr. (Russia)
Alexandre M. Zabelin, Industrial Lasers R&D Ctr. (Russia)
Valentina Ye. Zavalova, Industrial Lasers R&D Ctr. (Russia)
Vladislav Ya. Panchenko, Industrial Lasers R&D Ctr. (Russia)

Published in SPIE Proceedings Vol. 1810:
9th International Symposium on Gas Flow and Chemical Lasers
Costas Fotakis; Costas Kalpouzos; Theodore G. Papazoglou, Editor(s)

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