Excitonic wave packets observed in space- and time-resolved pump and probe experiments

Titelangaben

Otremba, R. ; Grosse, S. ; Koch, M. ; Feldmann, J. ; Axt, Vollrath Martin ; Kuhn, Tilmann ; Stolz, Wolfgang:
Excitonic wave packets observed in space- and time-resolved pump and probe experiments.
In: Solid State Communications. Bd. 109 (1999) Heft 5 . - S. 317-322.
ISSN 0038-1098
DOI: https://doi.org/10.1016/S0038-1098(98)00548-1

Angaben zu Projekten

Abstract

Abstract We investigate the coherent time regime in space- and time-resolved pump and probe experiments on a symmetrically strained InGaAs/GaAsP multiple quantum well. The spatial width of the transmission profiles shows a modulation which reflects the dynamics of an excitonic wave packet. This spatio–temporal beating originates from the combined action of various signal components which are detected simultaneously because of the collinearity of our experiment. The experimental results are in qualitative agreement with calculations obtained with a simplified model on the Hartree–Fock level.