Near field imaging of terahertz focusing onto rectangular apertures

M. A. Seo; A. J.L. Adam; J. H. Kang; J. W. Lee; K. J. Ahn; Q. H. Park; P. C.M. Planken; D. S. Kim

doi:10.1364/OE.16.020484

Near field imaging of terahertz focusing onto rectangular apertures

M. A. Seo, A. J.L. Adam, J. H. Kang, J. W. Lee, K. J. Ahn, Q. H. Park, P. C.M. Planken, D. S. Kim

Department of Physics

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

71 Citations (Scopus)

Abstract

We performed terahertz near-field experiments on single rectangular holes with various lengths grown on an electro-optic crystal substrate with λ/100 resolution. We find that the near-field amplitude becomes proportionally larger as the rectangle becomes narrower, strongly suggesting that a constant energy passes through even for a very narrow slit. The occurrence of a large field enhancement at the fundamental localized resonance is discussed confirming the funneling of energy at the near-field.

Original language	English
Pages (from-to)	20484-20489
Number of pages	6
Journal	Optics Express
Volume	16
Issue number	25
DOIs	https://doi.org/10.1364/OE.16.020484
Publication status	Published - 2008 Dec 8

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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abstract = "We performed terahertz near-field experiments on single rectangular holes with various lengths grown on an electro-optic crystal substrate with λ/100 resolution. We find that the near-field amplitude becomes proportionally larger as the rectangle becomes narrower, strongly suggesting that a constant energy passes through even for a very narrow slit. The occurrence of a large field enhancement at the fundamental localized resonance is discussed confirming the funneling of energy at the near-field.",

author = "Seo, {M. A.} and Adam, {A. J.L.} and Kang, {J. H.} and Lee, {J. W.} and Ahn, {K. J.} and Park, {Q. H.} and Planken, {P. C.M.} and Kim, {D. S.}",

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AU - Seo, M. A.

AU - Adam, A. J.L.

AU - Kang, J. H.

AU - Lee, J. W.

AU - Ahn, K. J.

AU - Park, Q. H.

AU - Planken, P. C.M.

AU - Kim, D. S.

PY - 2008/12/8

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N2 - We performed terahertz near-field experiments on single rectangular holes with various lengths grown on an electro-optic crystal substrate with λ/100 resolution. We find that the near-field amplitude becomes proportionally larger as the rectangle becomes narrower, strongly suggesting that a constant energy passes through even for a very narrow slit. The occurrence of a large field enhancement at the fundamental localized resonance is discussed confirming the funneling of energy at the near-field.

AB - We performed terahertz near-field experiments on single rectangular holes with various lengths grown on an electro-optic crystal substrate with λ/100 resolution. We find that the near-field amplitude becomes proportionally larger as the rectangle becomes narrower, strongly suggesting that a constant energy passes through even for a very narrow slit. The occurrence of a large field enhancement at the fundamental localized resonance is discussed confirming the funneling of energy at the near-field.

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Near field imaging of terahertz focusing onto rectangular apertures

Abstract

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