摘要
为了研究负折射率介质这种新型复合材料的电磁性质,利用麦克斯韦电磁理论对电磁波在正、负折射率介质交界面上的反射和透射特性进行了分析。得到了Snell反射定律和折射定律,反射系数和透射系数随入射角的关系(Fresnel公式)。结果发现Snell反射定律和折射定律仍然适用,但折射线与入射线位于法线的同侧;不论是TE波还是TM波,当以某一入射角入射时,反射系数都有可能变为零。这些结果对于设计新型的电磁学和光学器件具有指导性的意义。
In recent years the huge achievements of experimental and theoretic research have been obtained about the negative refractive index medium. In order to get the electromagnetic properties of this new compound material, the characteristics of reflection and transmission are studied according to Maxwell electromagnetism theory at the interface of the positive and negative refractive index media. The Snell reflection laws and refraction laws are also established, but the refractive rays and the incident rays are located at the same side of the normal. The Fresnel expressions of reflection coefficients and transmission coefficients are also obtained. For the TE wave or the TM wave, the reflection coefficient will become zero at a certain incident angle. These results have instructional significances to design new electromagnetic and optic components.
出处
《信息与电子工程》
2006年第3期212-214,共3页
information and electronic engineering
基金
浙江省教育厅科研基金项目(20040968)
关键词
负介电常数
负磁导率
负折射
反射系数
透射系数
negative permittivity
negative permeability
negative refraction
reflection coefficient transmission coefficient
