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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 1 — Jan. 1, 2009
  • pp: 106–108

Strong light concentration at the subwavelength scale by a metallic hole-array structure

John Chun-Chieh Chang, Zu-Po Yang, Danhong Huang, D. A. Cardimona, and Shawn-Yu Lin  »View Author Affiliations


Optics Letters, Vol. 34, Issue 1, pp. 106-108 (2009)
http://dx.doi.org/10.1364/OL.34.000106


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Abstract

A metallic two-dimensional hole-array (2DHA) sample is successfully fabricated and its transmission property measured at mid-infrared wavelengths ( λ 1.5 20 μ m ) . At the plasmonic resonance, the 2DHA sample exhibits a normal incidence transmittance of 80% at λ = 7.6 μ m . This corresponds to more than twice as much light that is transmitted as it impinges directly on the holes at the maxima of transmittance. This exceedingly large enhancement is attributed to a strong plasmonic resonance and an effective light concentration through an ultrathin metal film of 50 nm . This advancement will pave the way to a much enhanced infrared detection using a simple and compact 2DHA architecture.

© 2008 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(350.4238) Other areas of optics : Nanophotonics and photonic crystals

ToC Category:
Optics at Surfaces

History
Original Manuscript: September 15, 2008
Revised Manuscript: October 19, 2008
Manuscript Accepted: November 9, 2008
Published: December 31, 2008

Citation
John Chun-Chieh Chang, Zu-Po Yang, Danhong Huang, D. A. Cardimona, and Shawn-Yu Lin, "Strong light concentration at the subwavelength scale by a metallic hole-array structure," Opt. Lett. 34, 106-108 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-1-106


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