Linear and circular polarizations of exciton luminescence in GaAs/AlxGa1-xAs quantum wells

A. Frommer, E. Cohen, Arza Ron, L. N. Pfeiffer

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The cw, linearly and circularly polarized photoluminescence excitation spectra (Plin and Pcir), are studied for (e1:hh1) excitons of undoped GaAs/AlxGa1-xAs quantum wells. Monitoring in the high-energy range of the luminescence, pronounced 1S and 2S polarization-preserving bands are observed. They are shown to be due to LA-phonon-assisted relaxation of delocalized excitons. For the low-energy range Plin∼0 and a circular polarization reversal is observed, resulting from exciton-exciton scattering.

Original languageEnglish (US)
Pages (from-to)2803-2806
Number of pages4
JournalPhysical Review B
Volume48
Issue number4
DOIs
StatePublished - 1993
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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