Terahertz surface plasmon polaritons in textured metal surfaces formed by square arrays of metallic pillars

被引：18

作者：

Gao, Zhen ^{[1
]}

Shen, Linfang ^{[1
]}

Wu, Jin-Jei ^{[2
]}

Yang, Tzong-Jer ^{[2
]}

Zheng, Xiaodong ^{[3
]}

机构：

[1] Zhejiang Univ, Dept Informat Sci & Elect Engn, Hangzhou 310027, Zhejiang, Peoples R China

[2] Chung Hua Univ, Dept Elect Engn, Hsinchu 30012, Taiwan

[3] Zhejiang Univ, Dept Opt Engn, Hangzhou 310027, Zhejiang, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2012年 / 285卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Surface plasmon polaritons; Bound modes; Terahertz; Dispersion; Subwavelength confinement; Propagation length;

D O I：

10.1016/j.optcom.2011.12.087

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, we investigate numerically the characteristics of surface plasmon polaritons (SPPs) sustained by two-dimensional arrays of metallic pillars protruding out of planar metal surfaces at terahertz (THz) frequencies. Various shapes of the pillars are analyzed, and it is shown that the pillar shape only has weak influence on the dispersion of spoof SPPs. However, the loss of spoof SPPs is closely dependent on the pillar shape. It is also shown that spoof SPPs on textured surfaces with pillars can exhibit much better confinement than those on pierced surfaces with holes. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：2076 / 2080

页数：5

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