The influence of dynamical correlations in semiconductor plasmas on optical spectra

W. Schäfer, R. Binder, K. H. Schuldt

Research output: Contribution to journalArticle

30 Scopus citations

Abstract

On the basis of a nonequilibrium Green's function technique we determine a Bethe-Salpeter equation describing the linear response of a semiconductor under plasma excitation. Dynamical correlations entering the effective screened e-h interaction are treated on the basis of the full RPA polarization function. Numerical results for optical gain and absorption spectra are presented for various temperatures and densities. The validity of the commonly used plasmon pole approximation with regard to the lineshape of optical spectra is critically investigated.

Original languageEnglish (US)
Pages (from-to)145-157
Number of pages13
JournalZeitschrift für Physik B Condensed Matter
Volume70
Issue number2
DOIs
StatePublished - Jun 1 1988
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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