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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 26 — Dec. 25, 2006
  • pp: 12637–12643

Terahertz transparency at Fabry-Perot resonances of periodic slit arrays in a metal plate: experiment and theory

J. W. Lee, M. A. Seo, D. J. Park, S. C. Jeoung, Q. H. Park, Ch. Lienau, and D. S. Kim  »View Author Affiliations


Optics Express, Vol. 14, Issue 26, pp. 12637-12643 (2006)
http://dx.doi.org/10.1364/OE.14.012637


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Abstract

We report on a perfect transmission in one-dimensional metallic structure using time-domain terahertz spectroscopy. Fabry-Perot resonance appearing in spectral region below first Rayleigh minimum strongly enhances transmission up to over ninety-nine percent. Theoretical calculations reveal that under the perfect transmission condition, a symmetric eigenmode inside the slits is excited and a funneling of all incident energy onto the slits occurs, resulting in large energy concentration equivalent to the inverse sample coverage and high near-field enhancement of electric and magnetic field intensities. Our work opens way toward nearfield terahertz amplification, applicable to high-field terahertz spectroscopy.

© 2006 Optical Society of America

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(240.6690) Optics at surfaces : Surface waves
(260.3910) Physical optics : Metal optics
(300.6270) Spectroscopy : Spectroscopy, far infrared
(310.2790) Thin films : Guided waves

ToC Category:
Diffraction and Gratings

History
Original Manuscript: October 2, 2006
Revised Manuscript: December 18, 2006
Manuscript Accepted: December 18, 2006
Published: December 22, 2006

Citation
J. W. Lee, M. A. Seo, D. J. Park, S. C. Jeoung, Q. H. Park, Ch. Lienau, and D. S. Kim, "Terahertz transparency at Fabry-Perot resonances of periodic slit arrays in a metal plate: experiment and theory," Opt. Express 14, 12637-12643 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-26-12637


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