Abstract
The features of terahertz radiation generated upon oblique incidence of a femtosecond laser pulse on a metal surface are investigated theoretically. We propose a Cherenkov-type generation mechanism associated with excitation of low-frequency surface currents by a p-polarized optical field. The nonlinear surface currents and corresponding electrodynamic characteristics of low-frequency radiation are calculated analytically and by numerical simulation using the hydrodynamic model. The features of Cherenkov generation of terahertz radiation are analyzed, and techniques are proposed for increasing efficiency.
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Original Russian Text © V.A. Mironov, I.V. Oladyshkin, E.V. Suvorov, D.A. Fadeev, 2014, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2014, Vol. 146, No. 2, pp. 211–228.
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Mironov, V.A., Oladyshkin, I.V., Suvorov, E.V. et al. Generation of terahertz radiation during reflection of femtosecond laser pulses from a metal surface. J. Exp. Theor. Phys. 119, 179–195 (2014). https://doi.org/10.1134/S1063776114070139
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DOI: https://doi.org/10.1134/S1063776114070139