基于磁表面等离子体共振耦合的电磁波单向吸收器  

One-Way Absorber Based on Coupling of Magnetic Surface Plasmonic Resonances

作　　者：马荣坤 汤月明[1] 王纪俊[1] 郑召文[2] 方云团[2] 

机构地区：[1]江苏大学理学院,江苏镇江212013 [2]江苏大学计算机科学与通信工程学院,江苏镇江212013

出　　处：《中国激光》2016年第1期251-256,共6页Chinese Journal of Lasers

基　　金：江苏大学高级专业人才科研启动项目(13JDG003)

摘　　要：为了实现电磁波单向吸收,设计含磁性材料和金属材料的一维光子晶体。用修正的特征矩阵法研究它的传输特性。在磁光材料与金属界面激发磁表面等离子体共振并产生耦合的条件下,该结构出现近似完美的非互易吸收。对于特定波长409.725 nm,从左边以+45°入射的电磁波被完全吸收,而从右侧反方向以-45°入射时,电磁波被完全反射,没有任何传输和吸收。计算结果用基于有限元方法的仿真实验进行了验证。In order to achieve one-way absorber, a one-dimensional photonic crystal including magnetic material layer and metal layer is designed. The transmission properties of the structure are studied using a modified transfer matrix method. Based on the coupling of magnetic surface plasmonic resonances, the structure achieves perfect nonreciprocal absopbtion. For a special wavelength of 409.725 nm, the electromagnetic wave is totally absorbed from left incidence with incident angle of ＋45°, whereas it is totally reflected from right incidence with incident angle of -45°. The results are demonstrated through simulations based on finite element method.

关 键 词：物理光学 一维光子晶体 磁光效应 金属表面等离子体共振 单向吸收 

分 类 号：O436.2[机械工程—光学工程]