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Subpicosecond spectroscopy of excitons in GaAs/AlGaAs heterostructures

Subpikosekundenspektroskopie von Exzitonen in GaAs/AlGaAs Heterostrukturen
: Leo, K.; Shah, J.; Schmitt-Rink, S.; Köhler, K.

Laubereau, A.:
Ultrafast processes in spectroscopy 1991. Proceedings
Bristol: IOP Publishing, 1992 (Institute of Physics - Conference Series 126)
ISBN: 0-7503-0198-8
International Symposium on Ultrafast Processes in Spectroscopy <7, 1991, Bayreuth>
Conference Paper
Fraunhofer IAF ()

We study the dynamics of excitons in GaAs/AlGaAs quantum wells using time-resolved self-diffracted four-wave-mixing. We discuss two topics: First, we show that the decay of the diffracted signal is different for parallel and perpendicular polarization of the incident laser pulses, and second, we study the dephasing dynamics of a wavepacket in a coupled quantum well structure.