Theory for the nonlinear optical response of semiconductor surfaces: Application to the optical Stark effect and spectral oscillations of the Si(111)-(2x1) surface exciton

M. Reichelt, T. Meier, S. W. Koch, Michael Rohlfing

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

A microscopic approach is presented to compute nonlinear optical properties of semiconductor surfaces. The method uses quasiparticle wave functions and dispersions obtained from ab initio band-structure theory as an input for Bloch equations which describe the optical properties. Excitonic effects in the linear absorption spectra of the Si(111)-(2x1) surface are obtained by integrating equations of motion. To demonstrate the applicability of the approach for analyzing nonlinear optical properties, ultrafast light-intensity-dependent absorption changes of the surface exciton are predicted. The numerical results discuss the optical Stark effect and spectral oscillations of the surface exciton which can both be observed in pump-probe experiments.

Original languageEnglish (US)
Article number045330
Pages (from-to)453301-453306
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume68
Issue number4
StatePublished - Jul 1 2003

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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