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1995•Optics LettersRequires access

Surface-strain effects on photorefractive gratings

G. Fogarty, Mark Cronin‐Golomb

Open publisher page 14 citations

Abstract

Taking the crystal surface to be traction free, we calculate the lattice distortions and associated elasto-optic refractive-index changes induced by a photorefractive grating. The surface effects are significant and result in refractive-index changes near the surface that differ considerably from bulk values. Such surface effects should be of importance in thin-film photorefractive devices, in thin samples, and in certain situations in bulk crystals.

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What this paper is about

Taking the crystal surface to be traction free, we calculate the lattice distortions and associated elasto-optic refractive-index changes induced by a photorefractive grating. The surface effects are significant and result in refractive-index changes near the surface that differ considerably from bulk values. Such surface effects should be of importance in thin-film photorefractive devices, in thin samples, and in certain situations in bulk crystals.

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Available abstract

Taking the crystal surface to be traction free, we calculate the lattice distortions and associated elasto-optic refractive-index changes induced by a photorefractive grating. The surface effects are significant and result in refractive-index changes near the surface that differ considerably from bulk values. Such surface effects should be of importance in thin-film photorefractive devices, in thin samples, and in certain situations in bulk crystals.

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

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