摘要
本文研究了一种基于聚乙烯醇/丙烯酸-2-羟基乙酯的新型全息存储材料;研究了不同浓度的丙烯酸-2-羟基乙酯对光聚物材料衍射效率的影响;在厚度为95μm的光聚物薄膜中当曝光能量为231mJ/cm2时获得了近75%的高衍射效率。应用Matlab软件以光化学漂白理论、角度响应曲线理论为拟合模型,进行了基于Levenberg-Marquardt算法的非线性曲线拟合;通过非线性曲线拟合研究了不同浓度的丙烯酸-2-羟基乙酯对摩尔吸收系数、量子产率、折射率调制度、光聚物薄膜厚度等多个全息参数的影响;实验表明,丙烯酸-2-羟基乙酯的加入可有效增加光聚物薄膜的厚度并且改善光聚物薄膜的结构和性能,达到提升聚乙烯醇/丙烯酰胺光聚物初始材料的全息特性,改进光聚物材料全息光学数据存储容量的目地。
We have developed a new polyvinylalcohol-based photopolymeric holographic recording material. The recording is obtained by the copolymerization of acrylamide and 2-Hydroxyethyl Acrylate （HEA）. Diffraction efficiencies near 75% are obtained with exposure energy of 231 mJ/cm2 in materials of 95 μm thickness. The effect of different concentration HEA on the holographic parameters, such as moral absorption coefficient, quantum yield, refractive index modulation, thickness etc., is studied, by applying a nonlinear procedure based on Levenberg Marquardt＇s algorithms. The addition of HEA can improve the optical quality and increase the thickness of the film, which results in improved storage capacity for holographic optical storage.
出处
《光电工程》
CAS
CSCD
北大核心
2012年第2期141-146,共6页
Opto-Electronic Engineering
基金
山西省青年科技研究基金资助项目(2011021021-3)
