标题:
纳米粒子掺杂的光致聚合物全息性能改善研究Improvement of Holographic Properties in Nanoparticles Dispersed Photopolymer
作者:
倪庆凯, 于丹, 耿耀辉, 赵元元, 李春鹏
关键字:
光致聚合物, 全息光栅, 纳米粒子, 衍射效率Photopolymer, Holographic Grating, Nanoparticles, Diffraction Efficiency
期刊名称:
《Optoelectronics》, Vol.4 No.3, 2014-08-29
摘要:
本文研究了二氧化硅纳米粒子掺杂的聚甲基丙烯酸甲酯光致聚合物材料的光栅形成过程。证明了纳米粒子对材料全息性能的改善作用。针对小分子扩散行为，实验上测试了材料在短曝光后的光栅暗增强过程。针对光致聚合过程，实验上测试了材料在连续光照射下的实时光栅形成过程。并采用非线性拟合方式，估算了材料中小分子与纳米粒子间的互扩散速率。所获得的结果对于改善材料的全息性能有着重要应用价值。The grating formation process in SiO2 nanoparticles dispersed PQ-PMMA photopolymer is inves-tigated. It is demonstrated that the nanoparticles are a significant factor for improvement of holo-graphic properties. In diffusion process, the dark enhancement of grating is measured. In consec-utive polymerization, the temporal evolution of diffraction efficiency is measured for reflecting the grating formation process under consecutive exposure. The mutual diffusion rate between PQ molecule and nanoparticle is estimated by nonlinear fitting method. The corresponding extracted results are important for improving holographic characteristics of the materials.