Nonlinear-optical properties of semiconductor composite materials (original) (raw)

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Author Affiliations

Y. Q. Li,1C. C. Sung,1R. Inguva,2and C. M. Bowden2

1Department of Physics, University of Alabama in Huntsville, Huntsville, Alabama 35899 USA

2Research Directorate, Research, Development, and Engineering Center, U.S. Army Missile Command, Redstone Arsenal, Alabama 35898-5248 USA

R. Inguva is a National Research Council research associate on leave from the University of Wyoming, Laramie, Wyoming 82070.

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Abstract

The propagation of electromagnetic waves in a nonlinear medium composed of semiconductor microcrystallites embedded in a host medium has been investigated. Explicit results are given for the case of cadmium sulfide grains in glass when a saturable two-level approximation is used for the nonlinear dielectric function. The bistable behavior, noticed earlier by Chemla and Miller [ Opt. Lett. 11, 522 ( 1986)], for single grains is manifested in the propagation studies conducted here by the occurrence of a discontinuity in the index of refraction in the medium. Various approximations are used to obtain the optical bistability properties. Possible applications of this feature are pointed out.

© 1989 Optical Society of America

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