The largest negative refractive angles in uniaxial bicrystals  

作　　者：汤小蓉 王燕 余岢 

机构地区：[1]Department of Physics, College of Sciences, Shanghai University, Shanghai 200444, P. R. China

出　　处：《Journal of Shanghai University(English Edition)》2007年第4期374-379,共6页上海大学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China （Grant Nos.60407007, 60377025） the Science Foundation of Shanghai Municipal Commission of Education （Grant No.A03Q23）, and the Shanghai Leading Academic Discipline Project （Grant No.T0104）

摘　　要：Using the Maxwell＇s equations, we carry out theoretical analysis on the maximum incident and refractive angles at which negative refraction can be realized at the interfaces associated with conventional uniaxial media. In the numerical analysis, the largest incident and refractive angles at which refraction arises are obtained by optimizing directions of the optical axis of the uniaxial bicrystal. Meanwhile, the optical parameters of the ordinary uniaxial bicrystals （including homogeneity- junction and heterogeneity-junction） are given, and some representative laser wavelengths, the largest incident and refractive angles are obtained. The relation between the largest incident angles （or refractive angles） and refractive index is also discussed.Using the Maxwell＇s equations, we carry out theoretical analysis on the maximum incident and refractive angles at which negative refraction can be realized at the interfaces associated with conventional uniaxial media. In the numerical analysis, the largest incident and refractive angles at which refraction arises are obtained by optimizing directions of the optical axis of the uniaxial bicrystal. Meanwhile, the optical parameters of the ordinary uniaxial bicrystals （including homogeneity- junction and heterogeneity-junction） are given, and some representative laser wavelengths, the largest incident and refractive angles are obtained. The relation between the largest incident angles （or refractive angles） and refractive index is also discussed.

关 键 词：uniaxial media BICRYSTALS negative refraction the maximum incident angle homogeneity-junction heterogeneity-junction. 

分 类 号：O43[机械工程—光学工程]