ISSN:
0392-6737
Schlagwort(e):
Time-resolved optical phenomena (including electron-hole drops)
;
Optical properties of thin films surfaces, and layer structures (superlattices, heterojunctions and multilayers)
;
Electron states in low-dimensional structures (including quantum wells, superlattices, layer structures, and intercalation compounds)
;
Conference proceedings
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Summary We show that a detailed understanding of the influence of the exciton-exciton interaction on the non-linear excitonic response in a GaAs/AlGaAs superlattice can be obtained by changing the external applied field. In time-resolved four-wave mixing this implies a change from a third-order polarization signal dominated by phase space occupation to a Coulomb interaction-induced signal when the bias is increased at high excitation densities. The experimental data are compared with theoretical results based on the numerical solution of the semiconductor Bloch equations.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF02457209
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