含负折射率层的多层体系的反常光子隧穿

被引:26
作者
徐旭明
方利广
刘念华
机构
[1] 南昌大学物理学系
关键词
非线性光学; 光子反常隧穿; 传输矩阵方法; 多层体系; 负折射率材料;
D O I
暂无
中图分类号
O437 [非线性光学(强光与物质的作用)];
学科分类号
070207 ; 0803 ;
摘要
研究了多层体系含负折射率层的光学传输特性,通过传输矩阵方法,给出了体系透射率的一般表达式,并讨论了含负折射率层的四层结构在入射角大于临界角时的反常光子隧穿现象。当体系参量完全匹配时,对于任意入射光波长及大于临界角的入射,透射率均为1;仅衬底层不匹配时,对于给定的衬底参量,透射率和入射波长无关,仅和入射角相关。对于TM波,存在多层体系的布儒斯特角,使得透射率等于1。对于TE波则没有类似现象;在衬底不匹配的情况下,提高出射端的折射率将增加体系的透射率;中间层的厚度或者折射率不匹配时,透射率关于匹配位置对称分布且随着失谐的增加指数衰减,随着入射角的增加,衰减速度加快。
引用
收藏
页码:1676 / 1681
页数:6
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