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Guiding Terahertz Waves by a Single Row of Periodic Holes on a Planar Metal Surface

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Abstract

In this paper, we show that surface plasmon polaritons (SPPs) can be sustained by a single row of holes periodically drilled on a perfect electric conductor surface. These SPPs can be strongly confined in the transverse plane and they possess an excellent modal shape. In the terahertz regime, large propagation length is available for highly confined SPPs on a real-metal surface waveguide. As the dispersion characteristics of such SPPs can be controlled by the surface geometry, unusual total reflection phenomenon occurs when waves travel along a nonuniform surface waveguide with gradually increasing hole depths.

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Acknowledgements

The financial support by the Ministry of Education (Singapore) under grant no. R263000485112 and the partial support of the National Natural Science Foundation of China under grant no. 60971062 are gratefully acknowledged.

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Authors and Affiliations

  1. Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, Zhejiang Province, 310027, People’s Republic of China

    Linfang Shen & Xufeng Zhang

  2. Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117576, Singapore

    Xudong Chen & Krishna Agarwal

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  1. Linfang Shen
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  2. Xudong Chen
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  3. Xufeng Zhang
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  4. Krishna Agarwal
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Correspondence to Linfang Shen.

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Shen, L., Chen, X., Zhang, X. et al. Guiding Terahertz Waves by a Single Row of Periodic Holes on a Planar Metal Surface. Plasmonics 6, 301–305 (2011). https://doi.org/10.1007/s11468-011-9204-9

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  • DOI: https://doi.org/10.1007/s11468-011-9204-9

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