Coherent effects in photoexcited semiconductor superlattices with electric fields

T. Meier, P. Thomas, S. W. Koch

Research output: Contribution to journalReview article

2 Scopus citations

Abstract

A microscopic many-body theory is reviewed which allows one to compute the linear and nonlinear properties of photoexcited semiconductor superlattices in the presence of static and time-dependent electric fields applied in the growth direction. The theory includes the process of optical excitation, the Coulomb interaction among the carriers, carrier-phonon coupling, and the acceleration induced by the electric field. For static fields the influence of Coulomb effects, carrier relaxation, carrier-phonon scattering, and intra- and interband polarization dephasing on the Bloch-oscillation dynamics is analyzed. Furthermore, the observability of dynamic localization, which may occur for appropriately chosen alternating applied fields using optical spectroscopy, is discussed.

Original languageEnglish (US)
Pages (from-to)1-44
Number of pages44
JournalPhysics of Low-Dimensional Structures
Volume1998
Issue number3-4
StatePublished - Dec 1 1998

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Physics and Astronomy (miscellaneous)

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