氧化还原处理对Fe:LiNbO_3晶体光折变性能及热固定效果的影响  

Infiuence of Oxidationflleduction Treatinents on the Photorefractive Properties and the Thermal Fixing effect

作　　者：孙程君[1] 许世文[1] 张中兆 徐悟生[2] 徐玉恒 

机构地区：[1]哈尔滨工业大学电子科学与技术系,哈尔滨150001 [2]哈尔滨工业大学应用化学系,哈尔滨150001 [3]山东大学晶体材料国家重点实验室,济南250100

出　　处：《高技术通讯》2000年第12期64-66,70,共4页Chinese High Technology Letters

基　　金：86 3计划资助项目!(86 3 715 0 0 1 0 10 0 );黑龙江省自然科学基金项目

摘　　要：在LiNbO3中掺进Fe2 O3生长了Fe :LiNbO3晶体 ,并对晶体进行氧化、还原处理。利用二波耦合的方法 ,测试了不同氧化还原处理的Fe :LiNbO3,晶体的指数增益系数、衍射效率及响应时间。测试了三种不同处理晶体热固定后的显影效率 ,记录了全息先栅的记录、热补偿及离子衰减过程。LiNbO 3 was doped with Fe 2O 3 to grow Fe:LiNbO 3 crystals, and the oxidation and reduction treatments were made on the crystals. The exponential gain coefficient, the diffraction efficiency, and the response time were measured in the crystals by two wave coupling technique. The thermal fixing experiments were also done. The developing efficiencies were measured and the life history of holograms were recorded in the three kinds of crystals. The differences on the photorefractive properties and the thermal fixing effects among the crystals were founded, and the experimental results were analyzed.

关 键 词：FE:LIBO3晶体 光折变效应 热固定 氧化还原处理 掺铁 铌酸锂晶体 

分 类 号：O734[理学—晶体学] TN04[电子电信—物理电子学]