Invisible plasmonic meta-materials through impedance matching to vacuum

J. W. Lee; M. A. Seo; J. Y. Sohn; Y. H. Ahn; D. S. Kim; S. C. Jeoung; Ch Lienau; Q. Han Park

doi:10.1364/OPEX.13.010681

Invisible plasmonic meta-materials through impedance matching to vacuum

J. W. Lee, M. A. Seo, J. Y. Sohn, Y. H. Ahn, D. S. Kim, S. C. Jeoung, Ch Lienau, Q. Han Park

Department of Physics

Research output: Contribution to journal › Article › peer-review

70 Citations (Scopus)

Abstract

We report on perfect transmission in two-dimensional plasmonic matamaterials in the terahertz frequency range, in which zeroth order transmittance becomes essentially unity near specific resonance frequencies. Perfect transmission may occur when the plasmonic metamaterials are perfectly impedance matched to vacuum, which is equivalent to designing an effective dielectric constant around ε_r = -2. When the effective dielectric constant of the metamaterial is tuned towards ε_r and the hole coverage is larger than 0.2, strong evanescent field builds up in the near field, making perfect transmission possible.

Original language	English
Pages (from-to)	10681-10702
Number of pages	22
Journal	Optics Express
Volume	13
Issue number	26
DOIs	https://doi.org/10.1364/OPEX.13.010681
Publication status	Published - 2005 Dec 22

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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AU - Kim, D. S.

AU - Jeoung, S. C.

AU - Lienau, Ch

AU - Park, Q. Han

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AB - We report on perfect transmission in two-dimensional plasmonic matamaterials in the terahertz frequency range, in which zeroth order transmittance becomes essentially unity near specific resonance frequencies. Perfect transmission may occur when the plasmonic metamaterials are perfectly impedance matched to vacuum, which is equivalent to designing an effective dielectric constant around εr = -2. When the effective dielectric constant of the metamaterial is tuned towards εr and the hole coverage is larger than 0.2, strong evanescent field builds up in the near field, making perfect transmission possible.

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Invisible plasmonic meta-materials through impedance matching to vacuum

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