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

doi:10.1143/JJAP.44.L1005

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

25 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
巻	44
号	28-32
DOI	https://doi.org/10.1143/JJAP.44.L1005
出版ステータス	Published - 2005
外部発表	はい

ASJC Scopus subject areas

工学（全般）
物理学および天文学（全般）

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10.1143/JJAP.44.L1005

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title = "Terahertz wave enhanced transmission through a single subwavelength aperture with periodic surface structures",

abstract = "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.",

keywords = "Bragg reflector, Enhanced transmission, Periodic structure, Subwavelength aperture, Surface plasmon polariton, Terahertz wave",

author = "Kunihiko Ishihara and Hatakoshi, {Gen Ichi} and Tomofumi Ikari and Hiroaki Minamide and Hiromasa Ito and Keishi Ohashi",

year = "2005",

doi = "10.1143/JJAP.44.L1005",

language = "English",

volume = "44",

pages = "L1005--L1007",

journal = "Japanese Journal of Applied Physics, Part 2: Letters",

issn = "0021-4922",

publisher = "Japan Society of Applied Physics",

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TY - JOUR

T1 - Terahertz wave enhanced transmission through a single subwavelength aperture with periodic surface structures

AU - Ishihara, Kunihiko

AU - Hatakoshi, Gen Ichi

AU - Ikari, Tomofumi

AU - Minamide, Hiroaki

AU - Ito, Hiromasa

AU - Ohashi, Keishi

PY - 2005

Y1 - 2005

N2 - 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.

AB - 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.

KW - Bragg reflector

KW - Enhanced transmission

KW - Periodic structure

KW - Subwavelength aperture

KW - Surface plasmon polariton

KW - Terahertz wave

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DO - 10.1143/JJAP.44.L1005

M3 - Article

AN - SCOPUS:30344441118

SN - 0021-4922

VL - 44

SP - L1005-L1007

JO - Japanese Journal of Applied Physics, Part 2: Letters

JF - Japanese Journal of Applied Physics, Part 2: Letters

IS - 28-32

ER -

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

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