Microscopic theory of optical excitations, photoluminescence, and terahertz response in semiconductors

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Abstract

This article presents a comprehensive many-body theory for optically excited semiconductors. The coupled equations of motion for the correlation functions of the Coulomb-interacting electron-hole system are derived and solved for different excitation conditions. The generation of a coherent excitonic polarization and its conversion into incoherent populations is analyzed. The spontaneous emission properties of the excited system are evaluated using a fully quantized theory. Luminescence from excitonic and electron-hole plasma populations is computed, and significant hole burning in the exciton center of mass distributions is predicted. It is shown how different excitations states of the many-body system can be identified by their characteristic signatures in the absorption spectra of a terahertz probe field.

Original languageEnglish (US)
Pages (from-to)143-157
Number of pages15
JournalEuropean Physical Journal D
Volume36
Issue number2
DOIs
Publication statusPublished - Nov 2005
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Atomic and Molecular Physics, and Optics

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