Intersubband relaxation of heavy-hole excitons in GaAs quantum wells

R. A. Höpfel, R. Rodrigues, Y. Iimura, T. Yasui, Y. Segawa, Y. Aoyagi, S. M. Goodnick

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


The temporal dynamics of an exciton in a higher quantum-well subband is observed. The lifetime of the exciton formed by an electron of the lowest subband and a heavy hole of the second subband in GaAs quantum wells is determined by time-resolved luminescence as 130±20 ps, in agreement with theoretical estimations of intersubband scattering by acoustic-phonon emission. Consequences for intersubband lasers are substantial.

Original languageEnglish (US)
Pages (from-to)10943-10946
Number of pages4
JournalPhysical Review B
Issue number16
StatePublished - 1993
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics


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