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    Nonlinear Intersubband Photoabsorption in Asymmetric Single Quantum Wells

    Wijewardane, Harshani Ovamini, 1971-
    Ullrich, Carsten A.
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    [PDF] NonlinearIntersubbandPhotoabsorption.pdf (167.4Kb)
    Date
    2005
    Format
    Article
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    Abstract
    A density-matrix approach combined with time-dependent density-functional theory is used to calculate the intersubband photoabsorption in a strongly driven, DC-biased GaAs/AlGaAs single quantum well. For certain frequencies and intensities of the driving field, optical bistability is observed. Compared to a full time propagation of the density matrix, the commonly used two-level rotating wave approximation becomes less and less accurate for increasing asymmetry.
    URI
    http://hdl.handle.net/10355/7611
    Citation
    AIP Conf. Proc. June 30, 2005 Volume 772, pp. 1141-1142
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