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首页> 外文期刊>Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter >Fast switching of photorefractive output by applied electric field
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Fast switching of photorefractive output by applied electric field

机译：通过施加电场快速切换光折变输出

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摘要

We show that photorefractive materials having large electro-optic coefficients such as BaTiO_(3) require relatively small electric field to induce sufficient phase mismatch for the reduction of the diffraction efficiency to a large extent. In this way Pockels effect, which is very fast, can be used to control the diffraction efficiency in photorefractive wave mixing. The fast switching effect is shown in both two-wave mixing and four-wave mixing (FWM) geometries. We also show that optical switching based on orthogonally polarized photorefractive FWM has certain important advantages over that based on FWM with all extraordinary waves. This phenomenon can be very useful in fields like free space optical switching and interconnections.
机译：我们表明，具有大电光系数的光折变材料（例如BaTiO_（3））需要相对较小的电场，以引起足够的相位失配，从而在很大程度上降低衍射效率。这样，非常快的普克尔斯效应可用于控制光折射波混合中的衍射效率。快速切换效果在两波混合和四波混合（FWM）几何形状中均得到显示。我们还表明，基于正交偏振光折光FWM的光学开关比基于FWM的所有异常波具有某些重要优势。这种现象在自由空间光交换和互连之类的领域中可能非常有用。

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