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Browsing by Author "Luo, C"

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    Nonlinear terahertz spectroscopy of semiconductor nanostructures
    (2004-03-01)
    Luo, C
    ;
    Reimann, K
    ;
    Woerner, M
    ;
    Elsaesser, T
    ;
    電子物理學系
    Nonlinear frequency conversion and electro-optic sampling allow for the generation and phase-resolved characterization of few-cycle pulses in the frequency range up to 50 THz. Electric field transients with amplitudes of up to several MV/cm are applied to study coherent nonlinear excitations of low-dimensional semiconductors. We report the first observation of Rabi oscillations on intersubband transitions of electrons in GaAs/AlGaAs quantum wells. Frequency and phase of such oscillations are controlled in the 0.3- to 2.5-THz range via the strength and shape of the mid-infrared driving pulse.