TY - JOUR
T1 - Ultrafast electron-phonon interaction of intersubband transitions
T2 - Quantum kinetics from adiabatic following to Rabi-oscillations
AU - Butscher, Stefan
AU - Förstner, Jens
AU - Waldmüller, Inès
AU - Knorr, Andreas
PY - 2005/7/15
Y1 - 2005/7/15
N2 - The interaction of electrons with LO phonons provides an important mechanism of optical dephasing and carrier scattering for the two-dimensional electron gas in semiconductor quantum wells. In this paper, the corresponding ultrafast nonlinearities for off-resonant and resonant intersubband excitations are investigated. Quantum kinetic effects of the electron-phonon interaction and the corresponding violation of the microscopic energy conservation yield a qualitative different picture compared to the standard Markovian theory, if the phonon energy is larger than the intersubband-gap energy.
AB - The interaction of electrons with LO phonons provides an important mechanism of optical dephasing and carrier scattering for the two-dimensional electron gas in semiconductor quantum wells. In this paper, the corresponding ultrafast nonlinearities for off-resonant and resonant intersubband excitations are investigated. Quantum kinetic effects of the electron-phonon interaction and the corresponding violation of the microscopic energy conservation yield a qualitative different picture compared to the standard Markovian theory, if the phonon energy is larger than the intersubband-gap energy.
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U2 - 10.1103/PhysRevB.72.045314
DO - 10.1103/PhysRevB.72.045314
M3 - Article
SN - 1098-0121
VL - 72
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 4
M1 - 045314
ER -