偶氮苯聚合物的光致双折射数学模型的优化  

Optimized Math' s Model of Photoinduced Birefringence in Amorphous Copolymer Containing Azobenzene Groups

作　　者：徐宇科[1] 蔡志岗[1] 张灵志[2] 齐晓玲[1] 梁兆熙 

机构地区：[1]中山大学超快激光光谱学国家重点实验室 [2]中山大学超快激光光谱学国家重点实验室高分子研究所,广东广州510275 [3]高分子研究所,广东广州510275

出　　处：《中国激光》2002年第9期841-844,共4页Chinese Journal of Lasers

基　　金：国家自然科学基金(No.19604015);广东省自然科学基金(No.980279.No.001249和No.980346)

摘　　要：通过计算机模拟对含偶氮苯生色团的无定型共聚物的光致双折射进行研究,分析其光致双折射的写入、弛豫持性,对光致双折射的产生机制提出了一个新的数学模型。通过改变理论模型的参数,用穷举法求出具有不同参数的理论模型与实验数据之间误差的最小值,从而求出最理想数学模型的参数。The photoinduced birefringence was investigated in an amorphous copolymer containing azobenzene groups. And the characteristics of writing and relaxation of photoinduced birefringence were analyzed. A new modified mechanism model of the photoinduced birefringence was established and simulated by computer. The minimums of the error between the experiment data and math's model were calculated by changing the parameters of the math's model, and the best parameter values were obtained thereby.

关 键 词：数学模型 偶氮苯 光致双折射 光致异构 计算机模拟 

分 类 号：TN204[电子电信—物理电子学] O484.41[理学—固体物理]