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Browsing by Author "Hey, R"

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    Phase-resolved nonlinear response of a two-dimensional electron gas under femtosecond intersubband excitation
    (2004-01-30)
    Luo, CW
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    Reimann, K
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    Woerner, M
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    Elsaesser, T
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    Hey, R
    Strong electric-field transients resonant to intersubband transitions in n-type modulation-doped GaAs/AlGaAs quantum wells induce coherent Rabi oscillations, which are demonstrated by a phase-resolved measurement of the light emitted by the sample. The time evolution of the intersubband polarization is influenced by Coulomb-mediated many-body effects. The subpicosecond period and the phase of the Rabi oscillations are controlled by the properties of the midinfrared driving pulse.