Analytical calculation of free-electron current density at low-order harmonics of ionizing elliptically polarized laser pulse in the presence of a static electric field
Silaev A. A. 1,2, Romanov A. A. 1,2, Vvedenskii N. V. 1,2
1Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia
2Lobachevsky State University, Nizhny Novgorod, Russia
Email: silaev@appl.sci-nnov.ru, romanoval@ipfran.ru, vved@appl.sci-nnov.ru

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The paper presents the derivation of an analytical expression for the current density of free electrons excited during tunneling gas ionization by an elliptically polarized pulse in the presence of a static electric field. The analytical calculation of the spectral components of the current density at the low-order odd and even harmonics of the laser pulse is in good agreement with the results of the numerical simulation. Keywords: laser pulse, ionization, plasma, low-order harmonics generation, detection of terahertz and mid-infrared radiation. DOI: 10.61011/EOS.2023.02.55779.13-23
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