电磁波在正负折射率介质分界面上的折射与反射  

Reflection and Refraction of Electromagnetic Waves at the Interface between Media with Positive and Negative Refractive Indices

作　　者：游开明[1] 文双春[2] 

机构地区：[1]武汉理工大学信息工程学院 [2]湖南大学计算机与通信学院通信与电子工程系,长沙410082

出　　处：《衡阳师范学院学报》2004年第6期18-21,共4页Journal of Hengyang Normal University

摘　　要：最近的理论和实验证明了人工合成负折射率材料的可能性。本文详细研究了电磁波在正、负折射率介质分界面上的折射与反射规律,归纳出了不同情形下的Snell定律,并推广了菲涅耳定律。此外还发现,在正负折射率介质的分界面上依然存在全反射,全反射时的表面波能量有向前传播的,也有向后传播的,负折射只改变折射方向,不改变反射与透射场强的幅度。Recent theoretical and experimental results have shown that it is possible to construct artificially materials with negative refractive indices. In this paper, the reflective and refractive laws for electromagnetic waves at the interface between media with positive and negative refractive indices are studied in detail. The form of Snell's law in these cases are obtained and( Fresnel's) law is extended. Further, it is found that there also exists total reflection for electromagnetic waves at the interface between media with positive and negative refractive indices. The phenomenon of total reflection is analyzed in detail.

关 键 词：负折射率 折射 反射 菲涅耳定律 全反射 

分 类 号：O435.1[机械工程—光学工程]