Light erasing method for fabricating planar waveguide volume holographic gratings in LiNbO 3:Fe crystal

Dexing Yang, Haibin Wang, Jianlin Zhao, Xiaoli Wu, Rongguang Tong

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The fabrication of volume holographic gratings (VHGs) has been investigated for many years. According to the photorefractive properties of LiNbO 3:Fe crystal, the VHGs with the grating vector normal to c-axis of the crystal are obtained hardly. A new method for fabrication of above gratings in the planar waveguide array (PWA) in LiNbO 3:Fe crystal based on the light erasing effect is presented. This light erasing technique is divided into two steps: the fabrication of PWA and the light recording of VHGs in the PWA. A PWA is formed firstly in the LiNbO 3:Fe crystal through interference field of two red laser beams. The alignment direction of the formed PWA is parallel to c-axis of crystal. Then the VHGs are recorded using periodical erasing to the formed PWA by the bright fringes of interference, here the vector of the kind of gratings can be perpendicular to c-axis of LiNbO 3:Fe crystal. Furthermore, the VHGs with the period of micron order are created in a PWA employing the light erasing method. The experiment results demonstrate that the light erasing method for fabricating VHGs with the grating vector perpendicular to c-axis in LiNbO 3 crystal is feasible.

源语言英语
主期刊名Proceedings of SPIE - The International Society for Optical Engineering
DOI
出版状态已出版 - 2006
活动2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies - Xian, 中国
期限: 2 11月 20055 11月 2005

出版系列

姓名Proceedings of SPIE - The International Society for Optical Engineering
6149
ISSN(印刷版)0277-786X

会议

会议2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies
国家/地区中国
Xian
时期2/11/055/11/05

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