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Coherent Excitation Spectroscopy of Disordered Quantum‐Well Structures
Author(s) -
Finger E.,
Kraft S.,
Euteneuer A.,
Hofmann M.,
Stolz W.,
Rühle W.W.
Publication year - 2000
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200009)221:1<373::aid-pssb373>3.0.co;2-m
Subject(s) - dephasing , coherent spectroscopy , exciton , excitation , spectroscopy , biexciton , condensed matter physics , physics , quantum , polarization (electrochemistry) , quantum well , materials science , atomic physics , chemistry , quantum mechanics , laser , coherent anti stokes raman spectroscopy , raman scattering , raman spectroscopy
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 polarization‐resolved coherent excitation spectroscopy indicate a disorder‐induced dephasing of biexcitons in the inhomogeneously broadened sample.