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Optical Engineering

Near-field plasmon effects in extraordinary optical transmission through periodic triangular hole arrays
Author(s): Xiangnan Zhang; Guiqiang Liu; Zhengqi Liu; Ying Hu; Zhengjie Cai; Xiaoshan Liu; Guolan Fu; Mulin Liu
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Paper Abstract

We present a theoretical investigation of the transmission properties of light through a metallic film perforated with different arrays of compound triangular holes. The extraordinary optical transmission (EOT) in the optical region is obtained by employing the finite-difference time-domain method. The excitation of localized surface plasmon resonances (LSPRs) at the top corners and surface plasmon polaritons (SPPs) on the metal surface, plasmon coupling effects between adjacent apertures, and the waveguide modes for delivering light mainly contribute to the EOT in such structures. The optical characteristics can be effectively tailored by changing the arrangement of triangular holes and the structural parameters. This study may be helpful for plasmonic nanostrucutres based on EOT, and has potential applications in optoelectronic devices.

Paper Details

Date Published: 15 October 2014
PDF: 6 pages
Opt. Eng. 53(10) 107108 doi: 10.1117/1.OE.53.10.107108
Published in: Optical Engineering Volume 53, Issue 10
Show Author Affiliations
Xiangnan Zhang, Jiangxi Normal Univ. (China)
Guiqiang Liu, Jiangxi Normal Univ. (China)
Zhengqi Liu, Jiangxi Normal Univ. (China)
Ying Hu, Jiangxi Normal Univ. (China)
Zhengjie Cai, Jiangxi Normal Univ. (China)
Xiaoshan Liu, Jiangxi Normal Univ. (China)
Guolan Fu, Jiangxi Normal Univ. (China)
Mulin Liu, Jiangxi Normal Univ. (China)

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