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Exciton dephasing in quantum wells. Influence of spectral fluctuation processes

Entmischen der Phasen von Exzitonen in Quantum Wells. Einfluß der spektralen Fluktuationsprozesse
: Löser, F.; Neuber, A.; Klatt, D.; Lyssenko, V.G.; Pantke, K.-H.; Leo, K.; Glutsch, S.; Köhler, K.

Scheffler, M.; Zimmermann, R.:
23rd International Conference on the Physics of Semiconductors 1996. Vol. 1
Singapore: World Scientific, 1996
ISBN: 981-02-2777-9
ISBN: 981-02-2945-3
S.717-720 : Ill.
International Conference on the Physics of Semiconductors <23, 1996, Berlin>
Fraunhofer IAF ()
heterostructure; Heterostruktur; III-V Halbleiter; III-V semiconductors; time resolved measurement; zeitaufgelöste Messung

We perform spectrally resolved three-beam four-wave-mixing experiments in GaAs/AlGaAs quantum wells. The various resonances in these structures show very different decay parameters as a function of the delay times. A comparison with theory demonstrates that the relaxation of both polarization and population are governed by spectral fluctuations. The redistribution properties of the population are directly determined.