Coupled Optical Tamm States in a Planar Dielectric Mirror Structure Containing a Thin Metal Film  

作　　者：ZHOU Hai-Chun YANG Guang WANG Kai LONG Hua LU Pei-Xiang 周海春;杨光;王凯;龙华;陆培祥(Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074;School of Physics,Huazhong University of Science and Technology,Wuhan 430074)

机构地区：[1]Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074 [2]School of Physics,Huazhong University of Science and Technology,Wuhan 430074

出　　处：《Chinese Physics Letters》2012年第6期242-245,共4页中国物理快报（英文版）

基　　金：Supported by the National Basic Research Program of China under Grant No 2010CB923203;the National Natural Science Foundation of China under Grant Nos 60925021 and 10974062。

摘　　要：The coupling between two optical Tamm states (OTSs) with the same eigenenergy is numerically investigated in a planar dielectric mirror structure containing a thin metal film.The reflectivity map in this structure at normal incidence is obtained by applying the transfer matrix method.Two splitting branches appear in the photonic bandgap region when both adjacent dielectric layers of metal film are properly set.The splitting energy of two branches strongly depends on the thickness of the metal film.According to the electric field distribution in this structure,it is found that the high-energy branch corresponds to the antisymmetric coupling between two OTSs,while the low-energy branch is associated with the symmetric coupling between two OTSs.Moreover,the optical difference frequency of two branches is located in a broad terahertz region.

关 键 词：FILM method COUPLING 

分 类 号：O57[理学—粒子物理与原子核物理]