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Terahertz radiation in the interaction of a focused laser pulse with plasma

Published online by Cambridge University Press:  31 January 2023

A.A. Frolov Open the ORCID record for A.A. Frolov [Opens in a new window]
A.A. Frolov*
Affiliation:
Lebedev Physical Institute, Russian Academy of Sciences, Moscow 119991, Russia
*
† Email address for correspondence: [email protected]
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Abstract

The theory of terahertz (THz) wave emission at the oblique incidence of a focused s-polarized laser pulse on the boundary of a rarefied plasma is developed. The angular, spectral and energy characteristics of the THz signal as a function of the focal spot size and the incidence angle of laser radiation, as well as the plasma density, are investigated. It is shown that the THz radiation energy increases with a decrease in the laser pulse focal spot and has the maximum value when the tightly focused laser pulse is incident at the angle of total reflection on the plasma boundary.

Keywords

plasma nonlinear phenomena
Type
Research Article
Information
Journal of Plasma Physics , Volume 89 , Issue 1 , February 2023 , 905890107
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Copyright
Copyright © The Author(s), 2023. Published by Cambridge University Press

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