Optical gain of two-dimensional hole gas by intersubband Raman transitions
نویسندگان
چکیده
منابع مشابه
Optical dephasing of coherent intersubband transitions in a quasi-two-dimensional electron gas
We present a microscopic many-particle theory for the dephasing of coherent intersubband excitations in semiconductor quantum wells including carrier-carrier and carrier-phonon scattering and light propagation effects. The contributions of many-particle processes are nonadditive and thus cannot be treated separately. It is shown that due to nondiagonal correlation contributions, scattering rate...
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متن کاملPhase-resolved nonlinear response of a two-dimensional electron gas under femtosecond intersubband excitation.
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 t...
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ژورنال
عنوان ژورنال: Journal of Applied Physics
سال: 2012
ISSN: 0021-8979,1089-7550
DOI: 10.1063/1.4737575