摘要
用磁单负材料A和电单负材料B组成了（ABBA）N型一维光子晶体，利用传输矩阵法计算表明：在4500~7500 nm间出现了3个塔姆态。这些塔姆态有如下特性：入射角增加，其透射率不变，但半峰全宽度变窄，位置发生蓝移；在同一入射角时，TM波塔姆态的蓝移量大于TE波的。两介质的几何厚度同时增加时，TE波和TM波塔姆态的透射率和半峰全宽度均保持不变，但其位置都发生了红移。A介质的介电常数 A增加, TE波和TM波塔姆态的透射率均保持不变，但位置都发生了红移，其半峰全宽度都是先变窄再变宽。
An （ABBA）4- type one-dimensional photonic crystal was made from magnetic single -negative material A and electric single-negative materials B. Numerical calculation results indicate that there are three Tamm states in the range of 4 500- 7 500 nm with following characteristics. When the incident angle increases, the transmittance of Tamm states remain the same, but their location blue shifts. The shift rate of TE wave’s Tamm states is larger than TM wave’s at same incident angle. When geometric thickness of two media increases at the same time, the transmittance and the full-width half-maximum of Tamm states of TE and TM wave remain the same, but their location red shifts. When permittivity of A medium A increases, the transmittance of Tamm states of TE and TM wave remain the same, but their location red shifts, and their full-width half-maximum will be narrowed and then widened.
出处
《红外与激光工程》
EI
CSCD
北大核心
2014年第5期1600-1604,共5页
Infrared and Laser Engineering
基金
湖北省教育厅科学技术研究项目(Q20122307)
关键词
单负材料
光子晶体
塔姆态
偏振
single-negative material
photonic crystal
Tamm state
polarization
