PQ/PMMA聚合物应用于全息光存储的皱缩特性及影响研究  

Study on PQ/PMMA holographic recording characteristics and crumpling

作　　者：蒋睿铖 倪溢棉 张广威 陶春先[1] JIANG Ruicheng;NI Yimian;ZHANG Guangwei;TAO Chunxian(School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《光学仪器》2024年第4期29-36,共8页Optical Instruments

基　　金：国家重点研发计划(2018YFA0701800)。

摘　　要：基于全息光栅的角度优化工艺提升光存储性能的方法,相比引入新型组分改善存储材料,更简单且具有一定适用性。采用了热致聚合法制备菲醌掺杂的聚甲基丙烯酸甲酯(PQ/PMMA)光致聚合物,研究其在全息存储系统中材料厚度、记录光强及干涉夹角下的衍射性能及对应的体积皱缩率。结果表明,材料厚度与衍射性能线性相关,最佳记录光强也随厚度增加而增加,PQ/PMMA响应的最大空间频率约1285 lp/mm。通过布拉格曲线偏移推算发现,全息光栅体积皱缩表现为厚度、记录光强与皱缩量的负相关,与空间频率呈正相关。In the volume holographic storage,improving the holographic diffraction performance from the perspective of optimizing the preparation process of holographic grating is simpler and more efficient than introducing new components to improve the storage material,and has certain applicability.Polymethyl methacrylate(PQ/PMMA)photopolymer doped with phenanthioquinone was prepared by thermoinduced polymerization.The diffraction properties and volume shrinkage of PQ/PMMA in off-axis holographic storage system were studied under different material thickness,light intensity and interference angle.The experimental results show that the thickness of the material is linearly related to the diffraction properties,and the best light intensity increases with the thickness.The maximum spatial frequency that PQ/PMMA is about 1285 lp/mm.The volume shrinkage law of holographic grating calculated by Bragg curve migration shows that the thickness and light intensity are negatively correlated with the shrinkage,but positively correlated with the spatial frequency.This study is of great significance for the application of PQ/PMMA in off-axis holographic data storage.

关 键 词：全息光存储 光致聚合物 体积皱缩 衍射效率 

分 类 号：TN26[电子电信—物理电子学]