High-efficiency spoof plasmon polariton coupler mediated by gradient metasurfaces
High-efficiency spoof plasmon polariton coupler mediated by gradient metasurfaces
复制标题
梯度超表面介导的高效欺骗等离子激元耦合器
DOI：
10.1063/1.4767219
复制
发表时间：
2012-11-12
影响因子：
4
通讯作者：
Li, Yongfeng
中科院分区：
文献类型：
--
作者：
Wang, Jiafu;Qu, Shaobo;Li, Yongfeng
梯度超表面（GMs）能够提供沿其表面的预定义波矢。当附加波矢大于入射波的波矢时，即使在正入射情况下，入射波也能作为类等离激元极化激元（SPPs）高效耦合。在本文中，基于梯度超表面提出了SPP耦合器的设计。利用开口环谐振器设计了一种高效的SPP耦合器。模拟和实验均表明，在设计频率下，梯度超表面在正入射时能够实现近乎完美的SPP耦合。（C）2012美国物理联合会。[http://dx.doi.org/10.1063/1.4767219]
Gradient metasurfaces (GMs) can provide pre-defined wave vectors that are along the surface of GMs. When the additional wave vector is greater than that of incident waves, the incident waves can be coupled efficiently as spoof plasmon polaritons (SPPs) even under normal incidence. In this Letter, the design of SPP couplers was proposed based on GMs. A high-efficiency SPP coupler was designed using split-ring resonators. Both the simulation and experiment show that the GM can achieve nearly perfect SPP-coupling under normal incidence at the designed frequency. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4767219]