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Optical and Quantum Electronics

Erschienen in:

01.01.2023

Ultrashort laser-induced nonlinear currents at the conducting surface and THz radiation

verfasst von: Stanislav Bezhanov, Sergey Uryupin

Erschienen in: Optical and Quantum Electronics | Ausgabe 1/2023

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Abstract

We present the analytical and numerical study of the nonlinear currents excited at the surface of the conducting media irradiated by the ultrashort laser pulse. Electron dynamics are described by the Boltzmann transport equation which is solved using the perturbation theory in the incident electric field strength. For the pulses of very short duration the possibility of generating radiation with a frequency of more than 10 THz without a significant decrease in the generation efficiency due to the escape of electrons from the skin layer is revealed.

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Transverse charge separation field exists on the Debye screening spatial scale and may only affect current in the z-direction in the thin layer near the surface. The field in this thin layer is proportional to the laser intensity and has negligible effect on the THz radiation generation in the approximation we considered.

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Titel: Ultrashort laser-induced nonlinear currents at the conducting surface and THz radiation
verfasst von: Stanislav Bezhanov
Sergey Uryupin
Publikationsdatum: 01.01.2023
Verlag: Springer US
Erschienen in: Optical and Quantum Electronics / Ausgabe 1/2023
Print ISSN: 0306-8919
Elektronische ISSN: 1572-817X
DOI: https://doi.org/10.1007/s11082-022-04343-x

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