Manipulation of dark photonic angular momentum states via magneto-optical effect for tunable slow-light performance.
Manipulation of dark photonic angular momentum states via magneto-optical effect for tunable slow-light performance.
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DOI：
10.1364/oe.21.025035
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发表时间：
2013-10
期刊：
影响因子：
3.8
通讯作者：
Mu Yang;Tengfei Li;Q. Sheng;Tianhua Guo;Q. Guo;H. Cui;J. Chen
中科院分区：
文献类型：
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作者：
Mu Yang;Tengfei Li;Q. Sheng;Tianhua Guo;Q. Guo;H. Cui;J. Chen
提出了一种利用磁光效应操纵超材料中暗光子角动量态实现可调谐慢光性能的新方案。我们表明，通过施加一个静态磁场B，可以观察到一些对尖锐的透射率下降的背景透明窗口的复杂的超材料设计。每对透射率下降与具有相反拓扑电荷-m和+m的暗PAMS的激发有关，由于塞曼效应的经典模拟，具有提升的简并性。场幅值和横向能流的分布具有非互易性。讨论了慢光的特性，包括群指数ng、反常特征、强吸收以及与B的依赖关系。
We propose a novel scheme in realizing tunable slow-light performance by manipulating dark photonic angular momentum states (PAMSs) in metamaterials via the magneto-optical effect. We show that by applying a static magnetic field B, some pairs of sharp transmission dips can be observed in the background transparency window of a complex metamaterial design. Each pair of transmission dips are related to the excitation of dark PAMSs with opposite topological charges -m and +m, with a lifted degeneracy due to the classic analogue of Zeeman effect. Nonreciprocal characteristics can be observed in the distributions of field amplitude and transverse energy flux. The performance of slow light, including the group index ng, its abnormal feature, the associated strong absorption and the dependence with B are also discussed.