Extraction of many-body configurations from nonlinear absorption in semiconductor quantum wells

Detailed electronic many-body configurations are extracted from quantitatively measured time-resolved nonlinear absorption spectra of resonantly excited GaAs quantum wells. The microscopic theory assigns the observed spectral changes to a unique mixture of electron-hole plasma, exciton, and polariza...

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Bibliographic Details
Published in:Physical review letters 2010-06, Vol.104 (24), p.247401-247401, Article 247401
Main Authors: Smith, R P, Wahlstrand, J K, Funk, A C, Mirin, R P, Cundiff, S T, Steiner, J T, Schafer, M, Kira, M, Koch, S W
Format: Article
Language:English
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Summary:Detailed electronic many-body configurations are extracted from quantitatively measured time-resolved nonlinear absorption spectra of resonantly excited GaAs quantum wells. The microscopic theory assigns the observed spectral changes to a unique mixture of electron-hole plasma, exciton, and polarization effects. Strong transient gain is observed only under cocircular pump-probe conditions and is attributed to the transfer of pump-induced coherences to the probe.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.104.247401