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偶氮侧链液晶聚合物薄膜中基于光致双折射效应长久光存储的机理探讨
Study on Long-time Optical Storage Based on Photoinduced Birefringence in Azobenzene Side-chain Liquid Crystal Polymer Film
【摘要】 本文比较了连续矾酸钇倍频激光(输出波长532nm),脉冲Nd:YAG倍频激光(输出波长532nm、脉宽8ns、重复频率10Hz)作用下,偶氮侧链液晶聚合物薄膜的光致双折射效应和光记录特性。根据实验结果和数值模拟情况,引入温度效应,提出分子团积和主链链段取向效应,给出了基于光致双折射效应长久光信息记录的解释。
【Abstract】 The properties of photoinduced birefringence and optical storage in azobenzene side-chain liquid crystal polymer films are investigated by means of CW laser at 532 nm and the Q-switched (8 ns) second-harmonic generation Nd:YAG pulse. According to the experimental results and numerical simulation, long-time optical storage based on photoinduced birefringence related to temperature field, molecular accumulation, molecular chain orientation are explained.
【关键词】 偶氮液晶聚合物;
光致双折射;
长久光存储;
【Key words】 azobenzene liquid crystal polymer; photoinduced birefringence; optical storage;
【Key words】 azobenzene liquid crystal polymer; photoinduced birefringence; optical storage;
【基金】 国家重点基础研究发展规划[NO.973(G1999033003)]资助项目
- 【文献出处】 量子电子学报 ,Chinese Journal of Quantum Electronics , 编辑部邮箱 ,2003年01期
- 【分类号】TN104
- 【被引频次】3
- 【下载频次】198