Quantum unconfined Stark effect in a GaAs single quantum well: An optical-constant model

Jin Wang, J. P. Leburton, C. M. Herzinger, T. A. Detemple, J. J. Coleman

Research output: Contribution to journalArticlepeer-review

Abstract

A theoretical model for high-field electroabsorption in a single GaAs quantum well (QW) is presented. Electron and hole properties are modeled with a transfer-matrix technique which includes the nonparabolicity of the energy bands. This model adequately reproduces the coupling between quasibound and continuum states resulting from the influence of a large transverse electric (TE) field on a QW with a finite barrier height. The absorption coefficient has been calculated by the program opcons for the TE mode in the QW structure for electric fields ranging from 100 to 500 kV/cm. Our calculations predict an absorption coefficient in reasonable agreement with the experimental data, and with a simpler model based on the one-electron overlap integral picture.

Original languageEnglish (US)
Pages (from-to)4783-4785
Number of pages3
JournalPhysical Review B
Volume47
Issue number8
DOIs
StatePublished - 1993

ASJC Scopus subject areas

  • Condensed Matter Physics

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