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.