Designer surface plasmon dispersion on a one-dimensional periodic slot metasurface with glide symmetry

被引：48
作者：
Camacho, Miguel [1 ]
Mitchell-Thomas, Rhiannon C. [1 ]
Hibbins, Alastair P. [1 ]
Sambles, J. Roy [1 ]
Quevedo-Teruel, Oscar [2 ]
机构：
[1] Univ Exeter, Dept Phys & Astron, Electromagnet & Acoust Mat Grp, Stocker Rd, Exeter EX4 4QL, Devon, England
[2] KTH Royal Inst Technol, Dept Electromagnet Engn, Stockholm, Sweden
来源：
OPTICS LETTERS | 2017年 / 42卷 / 17期
基金：
英国工程与自然科学研究理事会;
关键词：
PHOTONIC CRYSTAL SLABS; WAVE-GUIDES; MODES; FILMS;
D O I：
10.1364/OL.42.003375
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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
引用
收藏
页码：3375 / 3378
页数：4
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