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, D. S. Kim

Research output: Contribution to journalArticle

43 Citations (Scopus)

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 near-field terahertz amplification, applicable to high-field terahertz spectroscopy.

Original languageEnglish
Pages (from-to)12637-12643
Number of pages7
JournalOptics Express
Volume14
Issue number26
DOIs
Publication statusPublished - 2006 Dec 25

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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