Biexcitonic effects in transient nonlinear optical experiments in quantum wells

G. Finkelstein, S. Bar-Ad, O. Carmel, I. Bar-Joseph, and Y. Levinson
Phys. Rev. B 47, 12964 – Published 15 May 1993
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Abstract

We present a model for the nonlinear optical response of quantum wells, which includes biexcitons. We show that within this model, the interaction of two laser pulses, mediated by the nonlinear susceptibility, results in oscillations and in coupling between σ+ and σ excitons. This explains the temporal behavior of the differential absorption and four-wave mixing in recent experiments [Phys. Rev. Lett. 68, 349 (1992); 68, 1880 (1992)]. The oscillations have a frequency equal to the biexciton binding energy, and are different from known interference and quantum beat phenomena.

  • Received 25 September 1992

DOI:https://doi.org/10.1103/PhysRevB.47.12964

©1993 American Physical Society

Authors & Affiliations

G. Finkelstein, S. Bar-Ad, O. Carmel, and I. Bar-Joseph

  • Department of Physics, The Weizmann Institute of Science, Rehovot 76100, Israel

Y. Levinson

  • Department of Physics, The Weizmann Institute of Science, Rehovot 76100, Israel
  • The Racah Institute, The Hebrew University, Jerusalem 91904, Israel

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Vol. 47, Iss. 19 — 15 May 1993

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