Mode splitting transmission effect of surface wave excitation through a metal hole array

Lin Chen; Yiming Zhu; Xiaofei Zang; Bin Cai; Zhou Li; Le Xie; Songlin Zhuang

doi:10.1038/lsa.2013.16

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Mode splitting transmission effect of surface wave excitation through a metal hole array

Original Articles

- Mode splitting transmission effect of surface wave excitation through a metal hole array
- Mode splitting transmission effect of surface wave excitation through a metal hole array
- LSA 2013年2卷第1-2期
- Affiliations：
  
  Engineering Research Center of Optical Instrument and System, Ministry of Education, Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China
- Author bio：
  
  Professor YM Zhu, Engineering Research Center of Optical Instrument and System, Ministry of Education, Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, No. 516 Jungong Road, Shanghai 200093, China E-mail: ymzhu@usst.edu.cn
- Funds：
- DOI：10.1038/lsa.2013.16
  中图分类号：
- 纸质出版日期：2013-06，
  
  网络出版日期：2013-03-29，
  
  收稿日期：2012-06-07，
  
  修回日期：2012-10-27，
  
  录用日期：2012-11-03
- Accepted：
Scan QR Code
Mode splitting transmission effect of surface wave excitation through a metal hole array[J]. LSA, 2013,2(1-2).

Chen, L. et al. Mode splitting transmission effect of surface wave excitation through a metal hole array. Light: Science & Applications, 2, e60 (2013).
Mode splitting transmission effect of surface wave excitation through a metal hole array[J]. LSA, 2013,2(1-2). DOI： 10.1038/lsa.2013.16.

Chen, L. et al. Mode splitting transmission effect of surface wave excitation through a metal hole array. Light: Science & Applications, 2, e60 (2013). DOI： 10.1038/lsa.2013.16.

摘要

Abstract

The resonant frequencies of the excited surface waves on a metal hole array with respect to the incident angle were studied in the terahertz region. The experimental and theoretical results demonstrate that the resonant peak of surface wave excitation splits into two when transmitted through a metal hole array off-normally. The high-order mode with resonant frequency above the cutoff frequency

(plasma frequency effect) has a shorter attenuation length than that of the low-order mode whose resonant frequency is below

. The reason is that the high-order mode is a coupled mode consisting of surface wave and hole modes

while the low-order mode is just an excited surface wave (which can be considered as the spoof surface plasmons). Our investigation may open a door to distinguish the spoof surface plasmons and the coupled modes of surface waves and hole modes.

关键词

Keywords

angular dependencecutoff frequencymetal hole arrayssurface wavesterahertz

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