光致各向异性中光学序参量的理论分析和仿真  

Theoretical analysis and simulation of optical order parameter for photoinduced anisotropy based on Legendre polynomials

作　　者：吴洋 邢美术[1] 林兆培 张明[2] Wu Yang;Xing Meishu;Lin Zhaopei;Zhang Ming(No.23 Research Institute,China Electronics Technology Group Corporation,Shanghai 201900,China;School of Electronic and Information Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]中国电子科技集团公司第二十三研究所,上海201900 [2]兰州交通大学电子与信息工程学院,兰州730070

出　　处：《河南师范大学学报（自然科学版）》2021年第1期31-36,共6页Journal of Henan Normal University(Natural Science Edition)

基　　金：甘肃省自然科学基金(17JR5RA099);兰州交通大学青年基金(2017004).

摘　　要：为了系统清晰地了解光学序参量在光致各向异性过程中的动力学原理,对其进行了理论研究学习.通过分析Trans和Cis分子光致各向异性的耦合速率方程(单位时间内信号强度和入射角的不同),利用勒让德多项式正交函数定理,计算得到了Trans和Cis分子光学序参量的解析解.并对Trans和Cis异构体浓度和光学序参量在时域上的变化进行了仿真,详细讨论了Trans和Cis分子在线性偏振激光照射下分子浓度和光学序参量的变化特性.To understand the dynamics of optical order parameters in the photoinduced anisotropy process systematically and clearly,the theory of the photoinduced anisotropy is studied.The time-depended expression of the photoinduced anisotropy is analyzed by considering theelementary(pump intensity and incident angle)contribution per unit time to the orientation by the fraction of the molecules.Based on the orthogonal functions theorem of the Legendre polynomials,the analytic solutions of the optical order parameters to the Trans and Cis isomers were obtained.The temporal changes of the optical order parameters of the Trans and Cis isomers were simulated.The varying curves of the concentration and optical order parameters for the Trans and Cis isomers were discussed.

关 键 词：光致各向异性 耦合速率方程 勒让德多项式 光学序参量 

分 类 号：O411.1[理学—理论物理]