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Coherent Excitation Spectroscopy of Disordered Quantum-Well Structures

✍ Scribed by E. Finger; S. Kraft; A. Euteneuer; M. Hofmann; W. Stolz; W.W. Rühle

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
310 KB
Volume
221
Category
Article
ISSN
0370-1972

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✦ Synopsis

We study semiconductor quantum-well samples with different disorder strengths by coherent excitation spectroscopy with particular emphasis on disorder-mediated couplings of exciton subensembles. Our experiments show that there is no coherent coupling of excitons in different quantum islands and in a strongly inhomogeneously broadened sample. Latest results with polarizationresolved coherent excitation spectroscopy indicate a disorder-induced dephasing of biexcitons in the inhomogeneously broadened sample.

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