Polariton-Biexciton Transitions in a Semiconductor Microcavity

U. Neukirch; S. R. Bolton; N. A. Fromer; L. J. Sham; D. S. Chemla

doi:10.1103/PhysRevLett.84.2215

Polariton-Biexciton Transitions in a Semiconductor Microcavity

U. Neukirch, S. R. Bolton, N. A. Fromer, L. J. Sham, and D. S. Chemla

Phys. Rev. Lett. 84, 2215 – Published 6 March 2000

Abstract

The influence of four-particle correlations on the nonlinear optics of a semiconductor microcavity is determined by a pump-and-probe investigation. Experiments are performed on a nonmonolithic microcavity which contains a ZnSe quantum well. In this system the biexciton binding energy exceeds both the normal-mode splitting between exciton and cavity mode and all damping constants. Oscillatory spectral features below the excitonic resonance are observed in the response for counterpolarized beams. Comparison with model calculations shows that in this case the coherent nonlinearity is dominated by biexciton-exciton interactions beyond the Hartree-Fock approximation.

Received 19 August 1999

DOI:https://doi.org/10.1103/PhysRevLett.84.2215

Authors & Affiliations

U. Neukirch^*, S. R. Bolton^†, N. A. Fromer, L. J. Sham^‡, and D. S. Chemla

Department of Physics, University of California and Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road MS 2-346, Berkeley, California 94720

^*Present address: Institut für Festkörperphysik, University of Bremen, P.O. Box 330 440, D-28334 Bremen, Germany.
^†Permanent address: Physics Department, Williams College, Williamstown, MA 01267.
^‡Permanent address: Department of Physics, University of California San Diego, La Jolla, CA 92093-0319.