High-efficiency electrically tunable phase diffraction grating based on a transparent lead magnesium niobate-lead titanite electro-optic ceramic.
High-efficiency electrically tunable phase diffraction grating based on a transparent lead magnesium niobate-lead titanite electro-optic ceramic.
复制标题
DOI：
10.1364/ol.36.002453
复制
发表时间：
2011-07
期刊：
影响因子：
3.6
通讯作者：
Q. Ye;Lei Qiao;H. Cai;R. Qu
中科院分区：
文献类型：
--
作者：
Q. Ye;Lei Qiao;H. Cai;R. Qu
提出了一种利用钛酸铅镁盐-钛酸铅（PMNT）透明电光陶瓷制作的电调谐高效相位衍射光栅。采用光掩模技术制作了Ti/Pt/Au叉指电极光栅。利用PMNT陶瓷的二次电光效应引起的等效相面的变化，改变光束的衍射图样，通过外加直流电压可以控制衍射效率。当施加的电压为41、80和139 V时，零级、一级或二级衍射光将依次消失，衍射效率约为100%。该光栅可作为电控开关用于激光光束的调制和扫描，特别适用于高功率激光系统。
An electrically tunable high-efficiency phase diffraction grating using the transparent lead magnesium niobate-lead titanite (PMNT) electro-optic ceramic is proposed. A photomask technique is used for fabricating the grating with the Ti/Pt/Au interdigital electrodes. With the variation of the equivalent phase face induced by the quadratic electro-optic effect of the PMNT ceramic, the diffraction patterns of the light beam will be changed in which the diffraction efficiency may be controlled by an applied DC voltage. When the applied voltages are 41, 80, and 139 V, the zero-order, first-order, or second-order diffraction lights will disappear in turn with about 100% diffraction efficiency. The proposed grating can be used as an electrically controlled switch in the laser beam modulation and scanning, especially for the application of the high-power laser systems.