各向异性特异材料界面的反常折射与反射性质  

The anomalous refraction and reflection properties at the interfaces associated with anisotropic metamaterial

作　　者：张利伟[1,2] 闫玲玲[2] 乔文涛[2] 赵军芳[2] 许静平[1] 

机构地区：[1]同济大学波耳固体物理研究所,上海200092 [2]河南理工大学物理化学学院,河南焦作454000

出　　处：《光电子．激光》2010年第8期1189-1192,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(10904032;10904113);河南省教育厅自然科学基金资助项目(2010B140005);河南理工大学博士基金资助项目(B2009-88);河南理工大学青年基金资助项目(Q2008-49);河南理工大学青年骨干教师资助项目(649144)

摘　　要：根据电磁场边界条件和色散关系,理论研究了电磁波从各向同性右手材料向各向异性特异材料入射时的反常折射与反射性质,结果表明,从各向同性右手材料向never cutoff型特异材料入射时,透射波的波矢和坡印廷矢量的反射角具有相反的符号,折射角的幅度随着入射角的增大而增大并趋于一定值;研究了磁导率张量参数对折射角的影响,对于anti-cutoff型特异材料界面,当入射角小于临界角θc时可以发生反常的全反射,而对于always cutoff型特异材料界面总会发生全向全反射。这些电磁性质将在部分聚焦与全向反射镜方面具有潜在的应用价值。Based on the electromagnetic boundary conditions and dispersion relations,the anomalous refraction and reflection properties of electromagnetic waves,which incident from the regular right handed medium into anisotropic metamaterial,are investigated.It is found that the refraction angles of the transmitted wave vector have apposite sign when the waves incident from the right banded medium into never cutoff metamaterial.The magnitude of refraction angle increases with the incident angle to a steady value,the influence of permeability tensors on the refraction angle is also studied.Furthermore,the anomalous total reflection in which the incident angle is smaller than the critical angles can occur for the anti-cutoff metamaterial.The omnidirectional total reflection always exists for the always cutoff metamaterial.Such properties will have potential applications in partial focusing and omnidirectional reflectors.

关 键 词：特异材料 各向异性 负折射 全反射 

分 类 号：O441.4[理学—电磁学]