Field-induced tuning of the optical properties of nonlinear composites near resonance

Ohad Levy, Yoad Yagil, David J. Bergman

Research output: Contribution to journalArticlepeer-review

Abstract

The bulk effective dielectric function of metal-dielectric composites has a series of poles in the vicinity of which it is extremely sensitive to small changes in the properties of the components. It is possible to induce such a change in the nonlinear component of a composite, containing at least one nonlinear component, by applying an external electric field at a similar frequency. This causes a tuning of the effective dielectric function and a continuous alteration of the optical properties of the medium. We propose a general framework for calculating this effect in two component composites and also calculate it in a few three component microgeometries. It is found that the optical transmittance of a thin film of this kind can be changed from zero up to 80% using moderate electric fields.

Original languageEnglish
Pages (from-to)1431-1435
Number of pages5
JournalJournal of Applied Physics
Volume76
Issue number3
DOIs
StatePublished - 1994

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