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

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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.

Original languageEnglish
Pages (from-to)20484-20489
Number of pages6
JournalOptics Express
Volume16
Issue number25
DOIs
Publication statusPublished - 2008 Dec 8

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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  • Cite this

    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. (2008). Near field imaging of terahertz focusing onto rectangular apertures. Optics Express, 16(25), 20484-20489. https://doi.org/10.1364/OE.16.020484