Abstract : We demonstrate that the spatially modulated electric field that is associated with a photorefractive grating generates stress and strain components with symmetries that are different from those induced by a uniform electric field. Therefore, because of piezoelectricity and the elasto-optic effect, the symmetries of the effective dielectric and electro-optic constants to be used to describe the photorefractive effect differ from the symmetries of the usual dielectric and electro-optic tensors. We derive analytical expressions to be used to compute these new constants from the measured clamped and unclamped dielectric and electro-optic coefficients. Experimental evidence is presented.
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Contributor : Fatima Pereira
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Submitted on : Friday, August 30, 2013 - 3:38:27 PM
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Gilles Pauliat, Pierre Mathey, Gérald Roosen. Influence of piezoelectricity on the photorefractive effect. Journal of the Optical Society of America B, Optical Society of America, 1991, 8 (9), pp.1942-1946. ⟨hal-00856179⟩
