Influence of nonuniformity of active medium of a long-pulse electric discharge XeCl amplifier on radiation divergence

Valery F. Losev; Yury N. Panchenko

doi:10.1117/12.460157

26 March 2002 Influence of nonuniformity of active medium of a long-pulse electric discharge XeCl amplifier on radiation divergence

Valery F. Losev, Yury N. Panchenko

Author Affiliations +

Proceedings Volume 4747, International Conference on Atomic and Molecular Pulsed Lasers IV; (2002) https://doi.org/10.1117/12.460157
Event: International Conference on Atomic and Molecular Pulsed Lasers IV, 2001, Tomsk, Russian Federation

Abstract

Influence of active medium non-uniformity of 300 ns pulse pump electric discharge XeCl laser on divergence of amplified radiation has been investigated. It was shown that in case of 100 - 200 kW/cm³ pump power the laser active media allows to amplify the diffraction limited laser beam practically without distortion. In case of 400 - 500 kW/cm³ pump power after 120 ns of discharge burning the micro- and macro-inhomogeneities appeared. These inhomogeneities increased the amplified radiation divergence. It was established that basic reason of a divergence degeneration was inhomogenity of gain profile in active medium. In our case amplification increased when the macro-inhomogeneities developed and the absorption increased when the micro- inhomogeneities developed in local regions of active medium.

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Valery F. Losev and Yury N. Panchenko "Influence of nonuniformity of active medium of a long-pulse electric discharge XeCl amplifier on radiation divergence", Proc. SPIE 4747, International Conference on Atomic and Molecular Pulsed Lasers IV, (26 March 2002); https://doi.org/10.1117/12.460157

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