掺杂TiO2纳米颗粒的抗缩皱光致聚合物全息特性的研究  

Study of holographic characteristics of TiO_2 nanoparticles dispersed resisting shrinkage photopolymer

作　　者：赵磊[1] 王龙阁[1] 胡宾[2] 黄明举[1] 

机构地区：[1]河南大学光学与光子技术研究所,物理与电子学院,开封475004 [2]河南大学特种功能材料教育部重点实验室,开封475004

出　　处：《物理学报》2011年第4期277-284,共8页Acta Physica Sinica

基　　金：河南大学省部共建基金(批准号:SGBJ090513)资助的课题~~

摘　　要：报道了一种掺杂亲水性TiO2纳米颗粒的丙烯酰胺基光致聚合物厚膜的全息特性.实验结果表明,掺杂TiO2纳米颗粒后的聚合物材料不仅在曝光过程中厚度缩皱有了明显的降低,而且衍射效率和其他性能参数都有了一定的改善,同时存在一个最佳的掺杂浓度,使得材料的最大衍射效率可以达到92.3%,最大折射率调制度达到2.09×10-3,体积缩皱降低至0.80%.Holographic recording characteristics of the hydrophilic TiO2-nanoparticle-dispersed polyvinyl alcohol /acrylamidebased thick photopolymer are studied.The experimental results show that not only the volume shrinkage during the holographic exposure can be suppressed by the inclusion of the nanoparticles,but also the diffraction efficiency and other performance parameters can be improved in the hydrophilic TiO2-nanoparticles dispersed photopolymer compared with those traditional samples.There exists an optimum concentration of TiO2-nanoperticals,in which the maximum diffraction efficiency can reach 92.3%,the maximum refractive index modulation arrives at 2.09 × 10-3,and the volume shrinkage reduces to 0.80%.

关 键 词：全息 光致聚合物 衍射效率 布拉格偏移 

分 类 号：O438.1[机械工程—光学工程]