| Literature DB >> 17630286 |
Tianhao Zhang1, Irina Kuznetsova, Torsten Meier, Xiaoqin Li, Richard P Mirin, Peter Thomas, Steven T Cundiff.
Abstract
Optical 2D Fourier transform spectroscopy (2DFTS) provides insight into the many-body interactions in direct gap semiconductors by separating the contributions to the coherent nonlinear optical response. We demonstrate these features of optical 2DFTS by studying the heavy-hole and light-hole excitonic resonances in a gallium arsenide quantum well at low temperature. Varying the polarization of the incident beams exploits selection rules to achieve further separation. Calculations using a full many-body theory agree well with experimental results and unambiguously demonstrate the dominance of many-body physics.Entities:
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Year: 2007 PMID: 17630286 PMCID: PMC1964869 DOI: 10.1073/pnas.0701273104
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205