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Theory of exciton-exciton correlation in nonlinear optical response

Th. Oestreich·K. Schoenhammer·L. J. Sham
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Abstract

We present a systematic theory of Coulomb interaction effects in the nonlinear optical processes in semiconductors using a perturbation series in the exciting laser field. The third-order dynamical response consists of phase-space filling correction, mean-field exciton-exciton interaction, and two-exciton correlation effects expressed as a force-force correlation function. The theory provides a unified description of effects of bound and unbound biexcitons, including memory-effects beyond the Markovian approximation. Approximations for the correlation function are presented.

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Th. Oestreich, K. Schoenhammer, L. J. Sham. 1998-07-09. Theory of exciton-exciton correlation in nonlinear optical response. https://doi.org/10.1103/physrevb.58.12920

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