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  • Title: Ultrashort-pulse-controlled all-optical modulation by interband and intersubband transitions in doped quantum wells.
    Author: Neogi A, Wada O, Takahashi Y, Kawaguchi H.
    Journal: Opt Lett; 1998 Aug 01; 23(15):1212-4. PubMed ID: 18087477.
    Abstract:
    The optimum condition for achieving highly efficient ultrafast all-optical pulse modulation by modification of the absorption of a pulsed interband light field by ultrasubband control-light pulses in a doped quantum well is investigated. The modulation efficiency in the femtosecond domain can be maximized by an intersubband control light with a pulse width (200 fs) that is comparable with the phase-relaxation time of the system and an intensity that is close to the intersubband saturation intensity.
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