Influence of carrier correlations on the excitonic optical response including disorder and microcavity effects

C. Sieh, T. Meier (), A. Knorr, F. Jahnke, P. Thomas and S. Koch

The European Physical Journal B: Condensed Matter and Complex Systems, 1999, vol. 11, issue 3, 407-421

Abstract: A model study of the characteristic signatures of carrier-correlation effects on the excitonic differential absorption spectra in semiconductors is presented. Using an effectively one-dimensional tight-binding system Coulomb-induced carrier-correlations up to third-order in the optical field are treated without additional approximations. To illustrate the influence of the different many-body contributions excitonic differential absorption spectra are computed for various polarizations and pump-probe time delays. The simultaneous influence of energetic disorder and correlations on the differential absorption spectra is discussed. Also presented are numerical results for the case when the semiconductor system is placed inside a microcavity in the strong-coupling regime. It is shown that the correlations induce characteristic signatures in the normal mode spectra. Copyright Società Italiana di Fisica, Springer-Verlag 1999

Keywords: PACS. 71.35.Cc Intrinsic properties of excitons; optical absorption spectra, 42.50.Md Optical transient phenomena: quantum beats, photon echo, free-induction decay, dephasings and revivals, optical nutation, and self-induced transparency, 78.66.-w Optical properties of specific thin films, surfaces, and low-dimensional structures: superlattices, quantum well structures, multilayers, and microparticles, (search for similar items in EconPapers)
Date: 1999
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DOI: 10.1007/BF03219177

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