Polariton–biexciton transitions in a ZnSe-based microcavity

The optical third-order nonlinearity of a ZnSe-based microcavity is investigated by the pump-and-probe method. In the specially designed non-monolithic sample the biexciton binding energy exceeds all damping constants and the normal-mode splitting between exciton and cavity photon. For counter-circu...

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Bibliographic Details
Published in:Journal of crystal growth 2000-06, Vol.214, p.1010-1014
Main Authors: Neukirch, U, Bolton, S.R, Fromer, N.A, Sham, L.J, Chemla, D.S
Format: Article
Language:English
Subjects:
Coherent nonlinear optics
Excitons
Microcavity
Zinc selenide
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Summary:The optical third-order nonlinearity of a ZnSe-based microcavity is investigated by the pump-and-probe method. In the specially designed non-monolithic sample the biexciton binding energy exceeds all damping constants and the normal-mode splitting between exciton and cavity photon. For counter-circular polarized beams the nonlinear response exhibits strong oscillatory structures in the spectral vicinity of the polariton–biexciton transition. Comparison to model calculations shows that in this case the coherent nonlinearity is completely dominated by biexciton–exciton interactions beyond the Hartree–Fock approximation.
ISSN:0022-0248
1873-5002
DOI:10.1016/S0022-0248(00)00247-5