ISSN:
0392-6737
Keywords:
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
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02457209
