Theoretical Study of Terahertz Near-Field Enhancement Assisted by Shape Resonance in Rectangular Hole Arrays in Metal Films

Park, D. J.; Choi, S. B.; Ahn, Y. H.; Park, Q. H.; Kim, D. S.

doi:10.3938/jkps.54.64

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Theoretical Study of Terahertz Near-Field Enhancement Assisted by Shape Resonance in Rectangular Hole Arrays in Metal Films

Park, D. J.;
Choi, S. B.;
Ahn, Y. H.;
Park, Q. H.;
Kim, D. S.

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WEB OF SCIENCE

21

Citations

SCOPUS

22

초록

We report a theoretical investigation on terahertz near-field enhancement in a rectangular hole array on a metal film driven by a shape resonance. The analytic model is constructed by boundary snatching the Rayleigh wave expansion and the modal expansion of electromagnetic waves. Simulation results reveal that the enhancement factor depends on the inverse coverage, reaching more than 1000 in a sub-micron wide rectangular hole. We also show that the resonance frequency is predominantly determined by the length of the rectangles while variations in the width and the thickness cause minor shifts in the resonant frequency.

키워드

Terahertz; Near-field; Rectangular hole; Diffraction theory; Field enhancement; TRANSMISSION; DIFFRACTION

제목: Theoretical Study of Terahertz Near-Field Enhancement Assisted by Shape Resonance in Rectangular Hole Arrays in Metal Films

저자: Park, D. J.; Choi, S. B.; Ahn, Y. H.; Park, Q. H.; Kim, D. S.

DOI: 10.3938/jkps.54.64

발행일: 2009-01

유형: Article

저널명: Journal of the Korean Physical Society

권: 54

호: 1

페이지: 64 ~ 70