掺杂修饰与未修饰Fe_3O_4纳米粒子的光致聚合物全息性能  

Holographic Properties of Modified and Unmodified Fe_3O_4-nanoparticle Dispersed Acrylate Photopolymer

作　　者：李春柳[1] 李赟玺 薛晓渝[1] 尉乔南[1] 聂慧丽[1] 朱治广[1] 黄明举[1] 

机构地区：[1]河南大学物理与电子学院光学与光电子技术研究所,河南开封475004

出　　处：《光子学报》2014年第6期72-77,共6页Acta Photonica Sinica

基　　金：河南大学省部共建科研基金(No.SGBJ090513)资助

摘　　要：制备了未修饰以及用柠檬酸钠修饰的两种磁性Fe3O4纳米粒子,并研究了将其掺入到有机光致聚合物中的全息性能,阐述了形成光栅的双扩散原理及抗皱原因.研究表明:掺入这两种纳米粒子后,材料的全息性能均有所提高,但掺入修饰后纳米粒子的全息性能更为突出,衍射效率可达90%,空间折射率调制度达2.14×10-3,缩皱率降低至0.8%,说明经柠檬酸钠修饰后的Fe3O4纳米粒子更有利于提高光致聚合物的全息性能.Holographic recording characteristics of the unmodified and modified by sodium citrate re3 w4- nanoparticles dispersed in conventional organic photopolymers were studied. The hybrid photopolymer exist the mutual diffusion process and anti-wrinkle effect in the experimental system was verified. The results of the experiment show that the incorporation of the both two kinds of Fe3O4-nanoparticle leads to an improvement of the holographic performance, hut the incorporation of the modified Fe3 O4-nanopartiele shows a higher holographic performance. The maximum diffraction efficiency reach to 90%, the maximum refractive index modulation arrives at 2.14 ×10^-3, and the volume shrinkage reduces to 0.8%. All of the results demonstrate that the incorporation of modified Fe3O4-nanoparticle is more conductive to improving photopolymer holographic performance.

关 键 词：全息材料 光致聚合物 FE3O4纳米粒子 衍射效率 布喇格偏移 

分 类 号：O438.1[机械工程—光学工程]