Spatial anisotropy of linear electro-optic effect in crystal materials: I—Experimental determination of electro-optic tensor in LiNbO₃ by means of interferometric technique

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• 作者：A.S. Andrushchak ; B.G. Mytsyk ; N.M. Demyanyshyn ; M.V. Kaidan ; O.V. Yurkevych ; I.M. Solskii ; A.V. Kityk ; W. Schranz
• 关键词：Linear electro-optic effect ; Interferometry ; Triclinic symmetry ; Pure and MgO-doped lithium niobate crystals ; Electro-optic coefficients
• 刊名：Optics and Lasers in Engineering
• 出版年：2009
• 出版时间：January 2009
• 年：2009
• 卷：47
• 期：1
• 页码：31-38
• 全文大小：263 K

文摘

The paper presents a technique suitable for the determination of linear electro-optic effect (LEOE) tensor components in crystal materials of any symmetry. The method is based on the Michelson interferometer, where the sample being studied is set into one of its arms to measure the electro-induced changes of the optical path. We describe in detail the sample geometries that are needed to determine a complete set of the LEOE tensor components and derive the corresponding equations. The experimental technique has been tested and verified on lithium niobate crystals as well as applied to MgO-doped LiNbO₃ crystals to study their electro-optic properties. The developed method can be useful for optical engineering, which deals with new materials being used in design or production of devices, such as, e.g., modulators or deflectors.