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Park, Hyeong‐Ryeol
Laboratory for Ultrafast & Nanoscale Plasmonics
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Terahertz nanoresonators: Giant field enhancement and ultrabroadband performance

Author(s)
Park, H. R.Park, Y. M.Kim, H. S.Kyoung, J. S.Seo, M. A.Park, D. J.Ahn, Y. H.Ahn, K. J.Kim, Dai-Sik
Issued Date
2010-03
DOI
10.1063/1.3368690
URI
https://scholarworks.unist.ac.kr/handle/201301/26274
Fulltext
https://aip.scitation.org/doi/10.1063/1.3368690
Citation
APPLIED PHYSICS LETTERS, v.96, no.12, pp.121106
Abstract
Transmission of terahertz (THz) electromagnetic waves through a series of nanoresonator arrays punctured in a thin metallic film is investigated. Over 30% of normalized transmitted amplitude is observed with only 0.18% of aperture-coverage, implying an electric field enhancement of 170. Increasing the coverage to 0.6% results in a 90% normalized amplitude, with a broader line width. Inspired by log-periodic antenna, we put ten nanoresonators with four different lengths per unit cell, succeeding in an ultrabroadband THz filter with one decade width between 0.2 and 2.0 THz.
Publisher
AMER INST PHYSICS
ISSN
0003-6951
Keyword (Author)
electromagnetic wave transmissionlog periodic antennasmetallic thin filmsresonator filters
Keyword
RECTANGULAR APERTURESSHAPE RESONANCEMETAL-FILMTRANSMISSION

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