Pump-probe investigations of biexcitons in GaAs quantum wells

The observation of biexcitonic contributions to time-resolved pump-probe measurements of a 25 nm multiple quantum well are reported. Results from wavelength and polarization dependent studies of the differential transmission in the vicinity of the heavy hole exciton transition demonstrate the strong...

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Bibliographic Details
Published in:Solid state communications 1994, Vol.92 (4), p.325-329
Main Authors: Smith, G.O., Mayer, E.J., Kuhl, J., Ploog, K.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of bulk materials and thin films
Physics
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Summary:The observation of biexcitonic contributions to time-resolved pump-probe measurements of a 25 nm multiple quantum well are reported. Results from wavelength and polarization dependent studies of the differential transmission in the vicinity of the heavy hole exciton transition demonstrate the strong influence of the biexciton state on the nonlinear response. Intensity dependent measurements are consistent with biexciton formation. The previously predicted angle dependence of the beating between light and heavy hole excitons is also observed.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(94)90710-2