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Proceedings Paper

Diagnostics of turbulent flow parmeters of active mixture in fast axial flow CO2 laser
Author(s): S. A. Buyarov; V. D. Dubrov; Michail G. Galushkin; Vladimir S. Golubev; R. V. Grishayev; Andrei A. Ionin; Andrei A. Kotkov; Vladislav Ya. Panchenko; Yuri N. Zavalov
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Paper Abstract

The characteristics of turbulent flow of laser mixture in high-power industrial CO2 lasers with fast axial flow have an influence on energy parameters of laser beam. In particular the transverse size of DC discharge and discharge stability depend on coefficient of turbulent diffusion. Moreover, turbulent pulsations cause small-scale optical inhomogeneities in the active medium. By the method of intra-resonator four-wave mixing in the active mixture of industrial CO2 laser with fast axial flow the coefficient of turbulent diffusion was determined. The nonlinearity of gain coefficient was used, and dissipation of amplitude diffraction grating due to turbulent diffusion was taken into consideration.

Paper Details

Date Published: 30 April 2002
PDF: 7 pages
Proc. SPIE 4644, Seventh International Conference on Laser and Laser-Information Technologies, (30 April 2002); doi: 10.1117/12.464130
Show Author Affiliations
S. A. Buyarov, Institute on Laser and Information Technologies (Russia)
V. D. Dubrov, Institute on Laser and Information Technologies (Russia)
Michail G. Galushkin, Institute on Laser and Information Technologies (Russia)
Vladimir S. Golubev, Institute on Laser and Information Technologies (Russia)
R. V. Grishayev, Institute on Laser and Information Technologies (Russia)
Andrei A. Ionin, P.N. Lebedev Physical Institute (Russia)
Andrei A. Kotkov, P.N. Lebedev Physical Institute (Russia)
Vladislav Ya. Panchenko, Institute on Laser and Information Technologies (Russia)
Yuri N. Zavalov, Institute on Laser and Information Technologies (Russia)


Published in SPIE Proceedings Vol. 4644:
Seventh International Conference on Laser and Laser-Information Technologies

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