Microscopic theory of optical dephasing in semiconductors

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

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


Dephasing, i.e. the decay of the optical interband polarization in a semiconductor results from destructive interference effects between different microscopic contributions. For a system without any disorder it is shown that the many-body Coulomb correlations lead to excitation-induced dephasing which becomes increasingly important at elevated excitation levels. The effect of disorder-induced dephasing is analyzed for low excitation levels, where the combined influence of excitonic, biexcitonic, and disorder scattering contributions lead to a temporal decay of the four-wave-mixing signal.

Original languageEnglish (US)
Pages (from-to)511-517
Number of pages7
JournalApplied Physics A: Materials Science and Processing
Issue number5
StatePublished - Nov 1 2000

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)


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