【作者】 路海；

【导师】 黄明举；

【作者基本信息】 河南大学 ， 光学， 2007， 硕士

【摘要】 光致聚合物材料因其具有高衍射效率、制作工艺简单、噪声小、实时记录、价格低廉等特性,而成为近年全息存储材料研究的重点。本文在总结了目前光学全息存储技术和光致聚合物材料的存储原理、性能研究现状的基础上,主要进行了以下几方面的工作: 1.结合光致聚合物中光化学反应的基本过程及其理论函数模型,对采用不同双染料敏化的光致聚合物的透射率曲线进行拟合得到了光化学反应理论模型中的参数。在此基础上依托于实验数据,利用MATLAB实现曲线拟合并得到光致聚合物中各光化学参数的新方法。2.研究了双染料敏化的全息光致聚合物的光化学反应理论模型及其动力学过程;研究了几种样品透射率随曝光时间、曝光强度、曝光波长的变化关系。3.分析了几种材料光化反应动力学参数——摩尔吸收系数、量子效率、光化漂白速率常数随曝光强度、曝光波长的变化关系,并解释了变化的原因。4.研究了以不同种胺类作为引发剂以及不同引发剂浓度对光致聚合物的全息性能及其光化漂白反应过程的影响。5.研究了以不同种胺类作为引发剂的全息光致聚合物材料的最大衍射效率、曝光灵敏度以及折射率调制度等全息特性参数的不同,分析了原因。6.研究了全息光致聚合物材料在全息记录过程中氧阻聚抑制的影响。更多还原

【Abstract】 Photopolymer materials have become the most potential candidate of digital holographic recording in recent years. The main reasons for this are the special properties of these media, such as high diffraction efficiency, ease of preparation, low noise, real-time processing and low cost. On the base of summarizing the progress of optical information storage technology, the holographic storage principle and characteristics of photopolymer, we have mainly studied the contents in this dissertation as follows:1. Analyzing the basic photochemical process and theoretical function model of the photopolymer. Based on the theoretical model and experimental datum, a new method is studied to obtain curve fitting and the photobleaching coefficient of the photopolymer by MATLAB.2. The photochemical theoretical model and the kinetics process of the photopolymer and the variations of transmission efficiency as a function of exposure time, exposure intensity, and exposure wavelength were studied respectively on the base of dual-cure photopolymerizable system.3. The variations of photochemical dynamic parameters—the molar absorption coefficient, photobleaching coefficient and quantum yield versus exposure intensity,and exposure wavelength were studied, and the causes of these changes are presented.4. The difference of holographic parameters and photobleaching kinetics of different amine photoinitiators and different TEA concentrations were studied respectively. 5. The holographic characteristic parameters such as maximum diffraction efficiency, sensitivity and modulation index of different amine photoinitiators are calculated,and the causes of these difference were presented.6. Elimination of oxygen inhibition in photopolymer systems used as holographic recording materials are studied.更多还原