Signatures of the excitonic memory effects in four-wave mixing processes in cavity polaritons

Article

关键词: NONLINEAR-OPTICAL RESPONSE;    QUANTUM-WELLS;    MOLECULES;    ZNSE;    GAAS;    SEMICONDUCTORS;    MICROCAVITY;    EXCITATION;    SYSTEM;   

DOI  :  10.1103/PhysRevB.62.6912

来源: SCIE

【 摘 要 】

We report the signatures of the exciton correlation effects with finite memory time in frequency domain degenerate four-wave mixing (DFWM) in semiconductor microcavity. By utilizing the polarization selection rules. we discriminate instantaneous, mean-held interactions between excitons with the same spins, long-living correlation due to the formation of biexciton state by excitons with opposite spins, and short-memory correlation effects in the continuum of unbound two-exciton states. The DFWM spectra give us the relative contributions of these effects and the upper limit for the time of the exciton-exciton correlation in the unbound hva-exciton continuum. The obtained results reveal the basis of the cavity polariton scattering model for the DFWM processes in high-Q GaAs microcavity.

【 授权许可】

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