15 December 2015 Evolution of spatial and energy characteristics conically divergent beams in the XeF(С-A) amplifier
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Proceedings Volume 9810, International Conference on Atomic and Molecular Pulsed Lasers XII; 98100O (2015) https://doi.org/10.1117/12.2225419
Event: XII International Conference on Atomic and Molecular Pulsed Lasers, 2015, Tomsk, Russian Federation
Abstract
Evolution of spatial and energy characteristics start pulse with energy of 0.8 mJ in duration of 2 ps in the XeF(С-A) amplifier of THL-100 laser system have been studied experimentally and by numerical simulation. Laser radiation energy E = 2 J was obtained experimentally. In that work we present the 3D-model amplification of conically diverging laser beams, that takes into account the spatial inhomogeneity of the pump, and the geometry of THL-100 laser system amplifier. Description and the test results of the model are submitted. At the start pulse energy 0.8 mJ, the calculated radiation energy at the XeF(С-A) output reaches 2.4 J. Simulation results shows that, maximal intensity of the laser radiation in this mode reaches P = 60 GW/cm2. The evolution of the energy and space-time structure of the laser beam in the amplifier was investigated. It is shown that in the ideal case (excluding the processes of nonlinear interaction of laser beam with an active medium), at the start pulse energy of 5 mJ, the energy of the laser radiation at the output of the amplifier is increased to Eout = 3.8 J. In this mode, the maximal radiation intensity reaches a value of I = 148 GW/cm2.
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Arkadii G. Yastremskii, Nikolai G Ivanov, Valery F. Losev, Yurii N. Panchenko, "Evolution of spatial and energy characteristics conically divergent beams in the XeF(С-A) amplifier", Proc. SPIE 9810, International Conference on Atomic and Molecular Pulsed Lasers XII, 98100O (15 December 2015); doi: 10.1117/12.2225419; https://doi.org/10.1117/12.2225419
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