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Time Resolved Four Wave Mixing in GaAs/AlAs Quantum Well Structures

  • E.O. Göbel
  • M. Koch
  • J. Feldmann
  • G. Von Plessen
  • T. Meier
  • A. Schulze
  • P. Thomas
  • S. Schmitt-Rink
  • K. Köhler
  • K. Ploog
Part of the NATO ASI Series book series (NSSE, volume 248)

Abstract

Femtosecond nonlinear laser spectroscopy is applied to study the dynamics of coherent optical excitations in semiconductors. In particular, beat phenomena of excitonic excitations in quantum wells and superlattice structures will be considered. We will demonstrate that four wave mixing experiments with time resolved detection of the nonlinear signal are able to distinguish between quantum beats and polarization interference. In addition, we report for a GaAs/AlAs superlattice the observation of quantum beats in the photon echo signal. The occurence of these beats is attributed to the simultaneous excitation of bound and localized excitons.

Keywords

Free Induction Decay Exciton Transition Nonlinear Signal Quantum Beat Beat Period 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 1993

Authors and Affiliations

  • E.O. Göbel
    • 1
  • M. Koch
    • 1
  • J. Feldmann
    • 1
  • G. Von Plessen
    • 1
  • T. Meier
    • 1
  • A. Schulze
    • 1
  • P. Thomas
    • 1
  • S. Schmitt-Rink
    • 1
  • K. Köhler
    • 2
  • K. Ploog
    • 3
  1. 1.Philipps-Universität MarburgFachbereich Physik and Wiss. Zentrum für MaterialwissenschaftenMarburgGermany
  2. 2.Fraunhofer Institut für Angewandte FestkörperforschungFreiburgGermany
  3. 3.Paul-Drude-Institut für FestkörperelektronikBerlinGermany

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