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首页> 外文期刊>Optics Letters >Tunable two-dimensional hexagonal phase array in domain-engineered Z-cut lithium niobate crystal
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Tunable two-dimensional hexagonal phase array in domain-engineered Z-cut lithium niobate crystal

机译:域工程Z切铌酸锂晶体中的可调谐二维六角形相控阵

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摘要

An optical phase array with tunable phase step is demonstrated. The phase array consists of a two-dimensional hexagonal lattice of inverted ferroelectric domains fabricated on a Z-cut lithium niobate substrate. The electro-optically tunable phase step is obtained by the application of an external electric field along the z axis of the crystal via transparent electrodes. Theoretical analysis and experimental results are presented, showing that a tunable and flexible adaptive optical illuminator device can be realized by combining the electro-optic tunability with the Talbot effect. Generation of a multiplicity of light patterns is shown.
机译:演示了具有可调相位阶跃的光学相位阵列。相阵列由在Z切割铌酸锂衬底上制造的反向铁电畴的二维六边形晶格组成。通过沿晶体的z轴通过透明电极施加外部电场,可以实现电光可调谐相位步骤。理论分析和实验结果表明,通过将电光可调谐性与塔尔伯特效应相结合,可实现一种可调节且灵活的自适应光学照明装置。显示了多个光图案的产生。

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