Coherent exciton-biexciton interaction studied by femtosecond spectroscopy

I. Galbraith, I. J. Blewett, A. Tookey, A. K. Kar, B. S. Wherrett

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Abstract

We report the observation of oscillations with delay time in the time integrated four-wave-mixing signal emitted following sub-picosecond two-beam excitation. The oscillations are shown to originate from exciton-biexciton interference in the photon-echo signal. The results are modelled within the density-operator framework and good agreement is found. The dependence of biexciton binding energy on well width is obtained from the variation in oscillation period. © 1998 Elsevier Science B.V. All rights reserved.

Original languageEnglish
Pages (from-to)654-661
Number of pages8
JournalJournal of Crystal Growth
Volume184-185
Publication statusPublished - 1998

Keywords

  • Biexcitons
  • Four-wave mixing
  • Quantum wells

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    Galbraith, I., Blewett, I. J., Tookey, A., Kar, A. K., & Wherrett, B. S. (1998). Coherent exciton-biexciton interaction studied by femtosecond spectroscopy. Journal of Crystal Growth, 184-185, 654-661.