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Landau damping in thin films irradiated by a strong laser field

D. F. Zaretsky·Ph. A. Korneev·S. V. Popruzhenko·W. Becker
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Abstract

The rate of linear collisionless damping (Landau damping) in a classical electron gas confined to a heated ionized thin film is calculated. The general expression for the imaginary part of the dielectric tensor in terms of the parameters of the single-particle self-consistent electron potential is obtained. For the case of a deep rectangular well, it is explicitly calculated as a function of the electron temperature in the two limiting cases of specular and diffuse reflection of the electrons from the boundary of the self-consistent potential. For realistic experimental parameters, the contribution of Landau damping to the heating of the electron subsystem is estimated. It is shown that for films with a thickness below about 100 nm and for moderate laser intensities it may be comparable with or even dominate over electron-ion collisions and inner ionization.

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D. F. Zaretsky, Ph. A. Korneev, S. V. Popruzhenko, W. Becker. 2004-09-13. Landau damping in thin films irradiated by a strong laser field. https://doi.org/10.1088/0953-4075/37/24/008

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