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1995•Applied Physics LettersRequires access

Nonelectrooptic nonlocal photorefractive effect in a polymer composite

Maciek E. Orczyk, Jaroslaw Zieba, Paras N. Prasad

Open publisher page 14 citations

Abstract

The grating spacing dependence of photorefractive diffraction efficiency in an organic polymer composite is presented and discussed. The analysis of the grating spacing dependence of the refractive index modulation with the standard model of photorefractive grating dynamics is shown to lead to inconsistencies in determination of the maximum attainable index change. It is shown that the effects resulting from orienting of the composite’s optically second-order nonlinear chromophores in the periodic local field affect the formation of the refractive index grating.

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What this paper is about

The grating spacing dependence of photorefractive diffraction efficiency in an organic polymer composite is presented and discussed. The analysis of the grating spacing dependence of the refractive index modulation with the standard model of photorefractive grating dynamics is shown to lead to inconsistencies in determination of the maximum attainable index change. It is shown that the effects resulting from orienting of the composite’s optically second-order nonlinear chromophores in the periodic local field affect the formation of the refractive index grating.

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Available abstract

The grating spacing dependence of photorefractive diffraction efficiency in an organic polymer composite is presented and discussed. The analysis of the grating spacing dependence of the refractive index modulation with the standard model of photorefractive grating dynamics is shown to lead to inconsistencies in determination of the maximum attainable index change. It is shown that the effects resulting from orienting of the composite’s optically second-order nonlinear chromophores in the periodic local field affect the formation of the refractive index grating.

Key concepts: Photorefractive effect, Organic photorefractive materials, Grating, Refractive index, Materials science, Diffraction efficiency, Chromophore, Optics

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