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Optics Letters

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  • Vol. 30, Iss. 10 — May. 15, 2005
  • pp: 1210–1212

Effect of a thin dielectric layer on terahertz transmission characteristics for metal hole arrays

Masaki Tanaka, Fumiaki Miyamaru, Masanori Hangyo, Takeshi Tanaka, Masamichi Akazawa, and Eiichi Sano  »View Author Affiliations


Optics Letters, Vol. 30, Issue 10, pp. 1210-1212 (2005)
http://dx.doi.org/10.1364/OL.30.001210


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Abstract

We studied the role of surface-plasmon polaritons (SPPs) in a bandpass transmission property of two-dimensional metal hole arrays (2D-MHAs) by investigating the effect of thin dielectric layers on the 2D-MHA surfaces. We measured zero-order transmission spectra of the 2D-MHAs by changing the thickness of the dielectric layer and found that the bandpass transmission peak shifted to the lower-frequency side with increasing layer thickness, owing to the change of the resonant frequency of the SPP. This result shows that SPPs play a crucial role in the transmission property of 2D-MHAs in the terahertz region.

© 2005 Optical Society of America

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(240.6680) Optics at surfaces : Surface plasmons
(260.3910) Physical optics : Metal optics

Citation
Masaki Tanaka, Fumiaki Miyamaru, Masanori Hangyo, Takeshi Tanaka, Masamichi Akazawa, and Eiichi Sano, "Effect of a thin dielectric layer on terahertz transmission characteristics for metal hole arrays," Opt. Lett. 30, 1210-1212 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-10-1210


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