Designer surface plasmon dispersion on a one-dimensional periodic slot metasurface with glide symmetry
Designer surface plasmon dispersion on a one-dimensional periodic slot metasurface with glide symmetry
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DOI：
10.1364/ol.42.003375
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发表时间：
2017-09-01
期刊：
影响因子：
3.6
通讯作者：
Quevedo-Teruel, Oscar
中科院分区：
文献类型：
--
作者：
Camacho, Miguel;Mitchell-Thomas, Rhiannon C.;Quevedo-Teruel, Oscar
在这封信中，我们探索了单层滑移对称结构支持的欺骗表面等离子体的色散。该结构由在金属层中穿孔的无限长双缺口槽组成。解释并通过实验证明了布里渊区边界处具有非零群速度的两个最低阶模式的简并性。此外，还探讨了滑移对称构型被破坏时能带结构的依赖性。 (C) 2017年美国光学学会
In this Letter, we explore the dispersion of spoof surface plasmons supported by a single-layer glide-symmetric structure. This structure consists of an infinitely long double-notched slot perforated in a metal layer. The presence of a degeneracy of the two lowest-order modes at the Brillouin zone boundary, which have non-zero group velocity is explained and experimentally demonstrated. Further, the dependence of the band structure when glide-symmetric configuration is broken is also explored. (C) 2017 Optical Society of America