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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 2 — Jan. 17, 2011
  • pp: 1101–1106

Extraordinary terahertz transmission in superconducting subwavelength hole array

Jingbo Wu, Hao Dai, Hao Wang, Biaobing Jin, Tao Jia, Caihong Zhang, Chunhai Cao, Jian Chen, Lin Kang, Weiwei Xu, and Peiheng Wu  »View Author Affiliations

Optics Express, Vol. 19, Issue 2, pp. 1101-1106 (2011)

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We report the extraordinary terahertz (THz) transmission through subwavelength hole array in superconducting NbN film. As the temperature drops below the superconducting transition temperature, the transmission spectra experience distinct changes. The extraordinary transmission is greatly enhanced in superconducting state due to the enhancement of surface plasmon polaritons (SPPs) and localized surface plasmons (LSPs). We have also observed temperature-dependent resonance frequency shift, which mainly depends on the coupling between SPPs and LSPs.

© 2011 OSA

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(260.5740) Physical optics : Resonance
(300.6495) Spectroscopy : Spectroscopy, teraherz
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Diffraction and Gratings

Original Manuscript: November 29, 2010
Revised Manuscript: January 6, 2011
Manuscript Accepted: January 7, 2011
Published: January 10, 2011

Jingbo Wu, Hao Dai, Hao Wang, Biaobing Jin, Tao Jia, Caihong Zhang, Chunhai Cao, Jian Chen, Lin Kang, Weiwei Xu, and Peiheng Wu, "Extraordinary terahertz transmission in superconducting subwavelength hole array," Opt. Express 19, 1101-1106 (2011)

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