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    Electron excitation in thin metal films due to the magnetic field of ultrashort laser pulses

    Access Status
    Fulltext not available
    Authors
    Lugovskoy, Andrey
    Bray, Igor
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Lugovskoy, A. and Bray, I. 2014. Electron excitation in thin metal films due to the magnetic field of ultrashort laser pulses. Journal of the Optical Society of America B: Optical Physics. 31 (10): pp. 2504-2510.
    Source Title
    Optical Society of America. Journal B: Optical Physics
    DOI
    10.1364/JOSAB.31.002504
    ISSN
    0740-3224
    School
    Department of Imaging and Applied Physics
    URI
    http://hdl.handle.net/20.500.11937/3824
    Collection
    • Curtin Research Publications
    Abstract

    The behavior of the conduction-band electrons in a metal film subjected to the action of an ultrashort laser pulse at normal incidence is analyzed quantum-mechanically. The pulse duration is assumed to be shorter than the electron mean free time. It is shown for the first time that electrons in the film can be excited resonantly to the higher-energy quantum well levels due to the action of the magnetic field of the wave. The numerical analysis is conducted for an electron which is initially in the lowest quantum well and has a quasi-momentum directed along the electric field. It is shown that the excitation probability due to the magnetic-field excitation mechanism can be even larger than the excitation probability due to the inverse bremsstrahlung in electron–phonon collisions.

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