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Correlated Transitions near the Band Edge

  • Wilfried Schäfer
  • Martin Wegener
Part of the Advanced Texts in Physics book series (ADTP)

Abstract

Correlated Transitions near the Band Edge

Let us now discuss the modifications of the optical Bloch equations (see Chap. 4) due to the Coulomb interaction among carriers. If optical transitions take place in the vicinity of the Γ point of the Brillouin zone, we can assert that the effective-mass approximation is valid, which allows us to analyze optical transitions in a small part of the Brillouin zone with very high accuracy. In real space, this implies that we ignore the lattice structure of the semiconductor and consider a scale which is large in comparison with one lattice constant.

Keywords

Nonlinear Optical Property Pump Intensity Transition Matrix Element Whittaker Function Quantum Beat 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2002

Authors and Affiliations

  • Wilfried Schäfer
    • 1
  • Martin Wegener
    • 2
  1. 1.Forschungszentrum Jülich GmbHJohn von Neumann - Institut für ComputingJülichGermany
  2. 2.Institut für Angewandte PhysikUniversität Karlsruhe (TH)KarlsruheGermany

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