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

doi:10.1103/PhysRevB.47.10943

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 journal › Article › peer-review

15 Scopus citations

Abstract

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 language	English (US)
Pages (from-to)	10943-10946
Number of pages	4
Journal	Physical Review B
Volume	47
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.47.10943
State	Published - 1993
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics

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10.1103/PhysRevB.47.10943

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title = "Intersubband relaxation of heavy-hole excitons in GaAs quantum wells",

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AU - Höpfel, R. A.

AU - Rodrigues, R.

AU - Iimura, Y.

AU - Yasui, T.

AU - Segawa, Y.

AU - Aoyagi, Y.

AU - Goodnick, S. M.

PY - 1993

Y1 - 1993

N2 - 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.

AB - 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.

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DO - 10.1103/PhysRevB.47.10943

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JF - Physical Review B

IS - 16

ER -

Intersubband relaxation of heavy-hole excitons in GaAs quantum wells

Abstract

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