Theory of coherent effects in semiconductors

Stephan W Koch, C. Sieh, T. Meier, F. Jahnke, A. Knorr, P. Brick, M. Hübner, C. Ell, J. Prineas, Galina Khitrova, H. M. Gibbs

Research output: Contribution to journalArticle

31 Scopus citations


A microscopic theory is applied to discuss coherent excitation effects in semiconductors. The theory is evaluated to analyze ultrafast absorption changes around the exciton resonance in semiconductor quantum-well structures where the relative strength of the different many-body contributions can be manipulated by proper selection of pump and probe polarizations. For two-band systems and oppositely circular polarization it is shown that Coulombic correlation dynamics dominates the optical response. As a consequence, the optical Stark effect in this configuration corresponds to a red shift of the exciton resonance in striking contrast to the usual atomic-like blue shift. The predictions are confirmed by experiments using high-quality InGaAs quantum-well systems.

Original languageEnglish (US)
Pages (from-to)1-6
Number of pages6
JournalJournal of Luminescence
Publication statusPublished - 1999



  • Coherent spectroscopy
  • Electronic correlations
  • Optical stark effect

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Atomic and Molecular Physics, and Optics

Cite this

Koch, S. W., Sieh, C., Meier, T., Jahnke, F., Knorr, A., Brick, P., ... Gibbs, H. M. (1999). Theory of coherent effects in semiconductors. Journal of Luminescence, 83-84, 1-6.