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Solid State Communications

Effective medium approximation for optical bistability in nonlinear metal-dielectric composites

Lei Gao, GU Li-ping, Yanyan Huang

Published Dec 12, 2003• 15 citations
Publisher
DOI
10.1016/j.ssc.2003.12.007

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Abstract Optically bistable behaviour is demonstrated for systems consisting of optically nonlinear microcrystallites embedded in an optically linear metal or dielectric. The most simple version of the local‐field correction serves as feedback mechanism thus avoiding external mirrors. The dielectric function for macroscopic samples is calculated with Garnett's effective medium theory. Numerical examples for the reflectivity and the transmissivity are given for an embedded dielectric with exciton‐like nonlinearity.