Using SBS for improvement of output beam divergence in excimer laser systems

Nikolai G. Ivanov; Valery F. Losev; Yury N. Panchenko

doi:10.1117/12.460104

26 March 2002 Using SBS for improvement of output beam divergence in excimer laser systems

Nikolai G. Ivanov, Valery F. Losev, Yury N. Panchenko

Proceedings Volume 4747, International Conference on Atomic and Molecular Pulsed Lasers IV; (2002) https://doi.org/10.1117/12.460104
Event: International Conference on Atomic and Molecular Pulsed Lasers IV, 2001, Tomsk, Russian Federation

Abstract

Formation of a diffraction limited divergence and obtaining a high contrast of radiation in electric-discharge XeCl laser system due to SBS are investigated. Possibility of a correction of laser beam wave-front distortion on an astigmatic and a spherical aberrations and on a refractive coefficient non-uniformity in optics elements and atmosphere is shown. Correction of laser beam wave-front having the 20- fold distortion of diffraction limited angle using phase- conjugate Brillouin mirror allowed to obtain the initial angle of 2 X 10^-5 rad divergence of laser beam. Use the threshold conditions of Brillouin scattering allowed to increase the XeCl laser radiation contrast from P_gen/P_noise approximately 4 up to P_gen/P_noise equals 10⁶ - 10⁷.

Citation Download Citation

Nikolai G. Ivanov, Valery F. Losev, and Yury N. Panchenko "Using SBS for improvement of output beam divergence in excimer laser systems", Proc. SPIE 4747, International Conference on Atomic and Molecular Pulsed Lasers IV, (26 March 2002); https://doi.org/10.1117/12.460104

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