Abstract

A phase-conjugate wave is generated by degenerate four-wave mixing in an amorphous chalcogenide As₂S₃ thin film. The time-dependent behaviors of the phase-conjugate wave, the nonlinear absorption coefficient, and the refractive index are treated analytically, and the results are compared with those of experiment. The analyses are based on the rate equations obtained from a simplified energy-band model of amorphous As₂S₃.

© 1985 Optical Society of America

Density matrix treatment of photodarkening kinetics in amorphous chalcogenide As₂S₃ thin films

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Binary phase spatial modulation using photoinduced anisotropy in amorphous As₂S₃ thin film

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