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Self-consistent three-dimensional model of ultrashort terahertz pulse amplification in a laser-induced nonequilibrium plasma channel in xenon
Russian version
DOI: 10.21883/EOS.2022.12.55247.48-22
Bogatskaya A.V. 1,2, Volkova E.A. 3, Popov A. M. 1,2
1Department of Physics, Lomonosov Moscow State University, Moscow, Russia
2Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia
3Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics, Moscow, Russia
Email: annabogatskaya@gmail.com, e.a.volkova@gmail.com, alexander.m.popov@gmail.com
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The propagation and amplification of ultrashort terahertz pulses in a nonequilibrium photoionization plasma channel formed in xenon by a powerful femtosecond UV laser pulse is studied in three-dimensional geometry. The study is based on the self-consistent numerical integration of the second-order wave equation in cylindrical geometry and the Boltzmann kinetic equation in the two-term expansion to describe the electron velocity distribution function in the spatially inhomogeneous nonequilibrium plasma of the channel. Keywords: nonlinear optics, terahertz radiation, nonequilibrium plasma channel, numerical simulation.
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