发明名称 OPTICAL FUNCTION ELEMENT, SINGLE CRYSTAL SUBSTRATE FOR THIS ELEMENT AND METHOD OF USING THE SAME
摘要 <p>PROBLEM TO BE SOLVED: To uniformly form a polarization inversion structure free of optical distortion with good accuracy. SOLUTION: This optical function element is constituted by forming the polarization inversion structure at a temperature below a Curie temperature in part of a ferroelectric single crystal substrate formed by using an LiTaO3 crystal ranging from 0.95 to 1.02 in the molar ratio of Li/Ta as a substrate by using an electron beam scanning irradiation method or voltage impression method and controlling the light past this polarization inversion structure. Propagation loss of <=2% and optical distortion of <=1×10-4 may be obtained without heat treatment.</p>
申请公布号 JP2002090785(A) 申请公布日期 2002.03.27
申请号 JP20000281878 申请日期 2000.09.18
申请人 NATIONAL INSTITUTE FOR MATERIALS SCIENCE;FURUKAWA YASUNORI;KITAMURA KENJI;TAKEGAWA SHUNJI;NAKAMURA MASARU 发明人 FURUKAWA YASUNORI;KITAMURA KENJI;TAKEGAWA SHUNJI;NAKAMURA MASARU
分类号 G02B1/02;G02F1/29;G02F1/355;G02F1/37;G02F1/377;(IPC1-7):G02F1/355 主分类号 G02B1/02
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