Cw and femtosecond optical nonlinearities of type-II quantum wells

G. R. Olbright, W. S. Fu, A. Owyoung, J. F. Klem, R. Binder, I. Galbraith, S. W. Koch

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


Femtosecond time-resolved and quasi-cw measurements of optical nonlinearities of type-II GaAs/AlAs quantum wells are reported. A pronounced blueshift of the heavy-hole exciton is observed, which develops on a 100-ps time scale after resonant interband excitation. The experimental observations are analyzed using many-body theory, explaining exciton blueshift and dynamical evolution in terms of electron-hole Coulomb enhancement, hole-phase-space filling, and hole-plasma cooling.

Original languageEnglish (US)
Pages (from-to)1358-1361
Number of pages4
JournalPhysical review letters
Issue number10
StatePublished - 1991

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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