Terahertz wave enhanced transmission through a single subwavelength aperture with periodic surface structures

Kunihiko Ishihara*, Gen Ichi Hatakoshi, Tomofumi Ikari, Hiroaki Minamide, Hiromasa Ito, Keishi Ohashi

*この研究の対応する著者

研究成果: Article査読

22 被引用数 (Scopus)

抄録

We demonstrate resonantly enhanced transmission of terahertz (THz) wave radiation (λ ∼ 200μm) through a bull's eye structure (a single subwavelength aperture surrounded by concentric periodic grooves in a metal plate). The phenomenon is caused by the resonant excitation of surface waves, which are known as surface plasmon polaritons in the optical region, generated by the concentric periodic grooves. Strongly enhanced transmission of THz-wave radiation is observed through the single subwavelength circular aperture (diameter d = 100 μm). We also show that introducing the Bragg reflector to the bull's eye structure results in the further increase of the enhanced transmission.

本文言語English
ページ(範囲)L1005-L1007
ジャーナルJapanese Journal of Applied Physics, Part 2: Letters
44
28-32
DOI
出版ステータスPublished - 2005 12 1
外部発表はい

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(その他)
  • 物理学および天文学(全般)

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