金属-介质复合体中的光学双稳  

OB and Two-OB Behavior of Metal-Dielectric Composite

作　　者：顾利萍[1] 顾江[1] 

机构地区：[1]常熟高等专科学校物理系,江苏常熟215500

出　　处：《常熟高专学报》2003年第4期25-28,共4页Journal of Changshu College

摘　　要：利用Maxwell-Garnett近似,结合谱表示和自洽平均场近似,从理论上研究了无规分布的旋转椭球金属颗粒浸在绝缘介质中而成的复合体在组分具有一般非线性时的光学双稳(OB),讨论了two-OB现象及它们与金属颗粒退极因子和体积分数之间的关系,并给出了数值计算结果。Optical bistability (OB) and two-OB behavior of metal-dielectric composites in which spheroidal metal particles are oriented in a dielectric host are investigated in general cases. The study is based on spectral density function combined with Maxwell-Garnett-type approximation. The phenomenon of two-OB is discussed and it depends on the volume fraction and the depolarization of the metallic particles. Model calculations are performed in this paper.

关 键 词：复合材料 金属—介质复合体 光学双稳 two-OB现象 谱表示 自洽平均场近似 光学非线性 

分 类 号：O437[机械工程—光学工程]