The nonlinear optical responses of a strongly coupled exciton-photon system in a semiconductor microcavity structure under weak excitation can be explained by a weak exciton-exciton interaction due to the nonideal bosonic (weakly interacting bosons) nature of the excitons. The exciton-exciton interaction leads to an attractive interaction between excitons with opposite spin, and a repulsive interaction between excitons with the same spin and a phase space filling. Earlier, we have reported the ratio of these interaction energies from the polarization-sensitive degenerate four-wave mixing on a strongly coupled GaAs quantum well (QW) microcavity under weak excitation density. In order to quantitatively determine the exciton-exciton polarization interaction energy, we have proposed a pump-probe nonlinear polarization rotation scheme. In the paper, we report the quantitative measurement of the exciton-exciton polarization interaction energy in the above mentioned system under strict weak excitation density using the pump-probe nonlinear polarization rotation (PR) technique. In the technique, the change of polarization state of a weak linearly polarized probe due to the anisotropy induced by a strong, circularly polarized pump is monitored in reflection geometry.


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    Titel :

    Quantitative study of exciton-exciton polarization interaction in a strongly coupled semiconductor quantum well microcavity


    Beteiligte:
    Svirko, Yu.P. (Autor:in) / Shimano, R. (Autor:in) / Kise, T. (Autor:in) / Kuwata-Gonokami, M. (Autor:in)


    Erscheinungsdatum :

    01.01.1999


    Format / Umfang :

    193966 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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