各向异性带壳柱形颗粒复合体系中的光学双稳  

Optical Bistability in Nonlinear Anisotropic Coated Cylinders Composites

作　　者：顾利萍[1] 

机构地区：[1]常熟理工学院物理系

出　　处：《常熟理工学院学报》2006年第6期23-26,共4页Journal of Changshu Institute of Technology

基　　金：江苏省重点建设实验室开放基金(05KFJJ001)资助项目

摘　　要：从Laplace方程出发,给出了在稀释极限下带各向异性壳的非线性柱形颗粒浸在基质中而形成的复合体系中的局域场与外场的关系。当核组分具有非线性电位移D和电场E关系时,探测了这类颗粒复合体系的光学双稳现象,讨论了颗粒结构参数和各向异性参数对双稳阈值的影响,并给出了体系的有效介电常数。The relation between the local field and the external field of the composites in which the no - linear anisotropic coated cylinder nano -particles embedded in dielectric host is given in dilute limit by using Laplace equations. The optical bistability is studied when the inner component has a field dependent part in the dielectric constant, and the threshold is strongly dependent on the anisotropic parameter and the structure parameter. The field - dependent effective dielectric constant of the composites is also studied in this paper.

关 键 词：带壳非线性柱形颗粒复合体系 光学双稳 等效介电常数 

分 类 号：O469[理学—凝聚态物理]