光色效应(Fe,Mn)…LiNbO_3晶体非挥发性全息存储中自衍射效应的实验研究  

Experimental Study on Self-Diffraction Effect During Photochromic Nonvolatile Holographic Storage in (Fe,Mn)…LiNbO_3 Crystals

作　　者：刘德安[1] 刘立人[1] 刘友文[1] 周常河[1] 徐良瑛[2] 

机构地区：[1]中国科学院上海光学精密机械研究所,上海201800 [2]中国科学院上海硅酸盐研究所,上海200050

出　　处：《光学学报》2001年第10期1190-1193,共4页Acta Optica Sinica

基　　金：国家自然科学基金 (6 98370 2 0 )

摘　　要：在双掺杂 (Fe ,Mn)…LiNbO3 晶体光色效应非挥发性全息存储实验中 ,观测到光束耦合作用导致的自增强和自衰减效应。根据这种自衍射效应 ,归纳了四种记录和光固定实验组合方案。实验结果表明 ,在记录和光固定过程中利用自增强效应得到的最高衍射效率为利用自衰减效应得到的衍射效率的两倍左右 ,说明在实际应用中必须考虑和利用自增强效应。The self enhancement and self depletion phenomena originated from the beam coupling effect are observed in photochromic (Fe,Mn)\:LiNbO 3 nonvolatile holographic storage experiments. Based on this self diffraction effect,four kinds of recording and optical fixing procedures are set up. The experimental results show that the highest diffraction efficiency available from the self enhancement may be twice of the lowest one from the self depletion,both during the recording and fixing phases. Therefore,the use of the self enhancement is necessary for the practical applications.

关 键 词：(Fe Mn):LiNbO3 晶体 光色效应 光束耦合 自衍射 铌酸锂 非挥发性全息存储 

分 类 号：O734[理学—晶体学]