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Near field imaging of terahertz focusing onto rectangular apertures
- Authors
- Seo, M. A.; Adam, A. J. L.; Kang, J. H.; Lee, J. W.; Ahn, K. J.; Park, Q. H.; Planken, P. C. M.; Kim, D. S.
- Issue Date
- 8-12월-2008
- Publisher
- OPTICAL SOC AMER
- Citation
- OPTICS EXPRESS, v.16, no.25, pp.20484 - 20489
- Indexed
- SCIE
SCOPUS
- Journal Title
- OPTICS EXPRESS
- Volume
- 16
- Number
- 25
- Start Page
- 20484
- End Page
- 20489
- ISSN
- 1094-4087
- Abstract
- We performed terahertz near-field experiments on single rectangular holes with various lengths grown on an electro-optic crystal substrate with lambda/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. (C) 2008 Optical Society of America
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