Theory of nonlinear optical absorption in coupled-band quantum wells with many-body effects

M. F. Pereira, R. Binder, S. W. Koch

Research output: Contribution to journalArticle

35 Scopus citations


Nonlinear optical absorption spectra and refractive index changes are computed for coupled-band semiconductor quantum wells by numerically solving the interband polarization equation. The theory combines band-structure engineering with many-body techniques and is applied to lattice-matched GaAs-AlGaAs and strained InGaAs-GaAs systems with carrier densities ranging from the excitonic to the gain regimes. Good agreement with recent experimental results is found.

Original languageEnglish (US)
Pages (from-to)279-281
Number of pages3
JournalApplied Physics Letters
Issue number3
StatePublished - Dec 1 1994


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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