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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 5 — Mar. 1, 2014
  • pp: 1270–1273

Role of surface plasmon resonant modes in anomalous terahertz transmission through double-layer metal loop arrays

Song Xia, Dongxiao Yang, Tao Li, Xiang Liu, and Jian Wang  »View Author Affiliations


Optics Letters, Vol. 39, Issue 5, pp. 1270-1273 (2014)
http://dx.doi.org/10.1364/OL.39.001270


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Abstract

A three-layer construction was proposed to induce anomalous transmission response for a normal incidence of terahertz (THz) wave. This structure was composed of a dielectric layer of quartz and two metallic layers, which were deposited on the two surfaces of quartz and patterned the same periodic arrays of subwavelength air circular loop. Based on comparative analyses of dispersion relations of both the structure and its partial structures, propagating surface plasmon and localized surface plasmon principally dominated the lower and higher resonant peaks appearing in the calculated transmittance spectrum, respectively. A sample was fabricated by laser technology for experiment and the measured THz transmission showed a good agreement with simulation, providing reference for potential applications.

© 2014 Optical Society of America

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(240.6680) Optics at surfaces : Surface plasmons
(260.3090) Physical optics : Infrared, far
(260.5740) Physical optics : Resonance

ToC Category:
Physical Optics

History
Original Manuscript: November 11, 2013
Revised Manuscript: January 22, 2014
Manuscript Accepted: January 22, 2014
Published: February 25, 2014

Citation
Song Xia, Dongxiao Yang, Tao Li, Xiang Liu, and Jian Wang, "Role of surface plasmon resonant modes in anomalous terahertz transmission through double-layer metal loop arrays," Opt. Lett. 39, 1270-1273 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-5-1270


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