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Phys Rev Lett. 2009 Jul 10;103(2):023601. Epub 2009 Jul 10.

Measurement and model of the infrared two-photon emission spectrum of GaAs.

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  • 1Department of Electrical Engineering, Technion, Haifa 32000, Israel.

Abstract

Two-photon emission from semiconductors was recently observed, but not fully interpreted. We develop a dressed-state model incorporating intraband scattering-related level broadening, yielding nondivergent emission rates. The spectrum calculations for high carrier concentrations including the time dependence of the screening buildup correspond well to our measured two-photon emission spectrum from GaAs.

PMID:
19659203
[PubMed]
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