Abstract

The strong optical nonlinearity of biexcitons in semiconductors necessitates a nonperturbative calculation of the nonlinear-optical susceptibility of the semiconductor and of the propagation equation of the light wave. Such calculations are possible for all light-beam geometries within a simple model in which excitons and biexcitons are treated quantum mechanically as bosons, with no reference to their internal structure. This simple model can account for most experimental observations, while when dephasing and population effects are considered it predicts the appearance of a dephasing-induced extra resonance analogous to that observed in gases or molecular crystals.

© 1985 Optical Society of America

Optical nonlinearity, bistability, and signal processing in semiconductors

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