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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 12 — Jun. 13, 2005
  • pp: 4406–4413

Enhanced mid-infrared transmission through nanoscale metallic coaxial-aperture arrays

Wenjun Fan, Shuang Zhang, K. J. Malloy, and S. R. J. Brueck  »View Author Affiliations


Optics Express, Vol. 13, Issue 12, pp. 4406-4413 (2005)
http://dx.doi.org/10.1364/OPEX.13.004406


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Abstract

Using a single interferometric lithography patterning step along with self-aligned pattern-definition techniques, uniform, large-area metallic coaxial arrays with ~100-nm toroidal gaps are fabricated. Enhanced (5×) mid-infrared (4 µm) transmission through these sub-wavelength coaxial arrays is observed as compared with that through the same fractional opening area hole arrays as a result of the complex coaxial unit cell. Varying the coaxial dimensions shifts the resonance wavelength and impacts the maximum transmission; design rules are derived. The ability to control the transmission wavelength combined with dramatically enhanced transmission represent a promising path toward nanophotonic applications.

© 2005 Optical Society of America

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(050.2770) Diffraction and gratings : Gratings
(220.3740) Optical design and fabrication : Lithography
(220.4000) Optical design and fabrication : Microstructure fabrication

ToC Category:
Research Papers

History
Original Manuscript: May 3, 2005
Revised Manuscript: May 27, 2005
Published: June 13, 2005

Citation
Wenjun Fan, Shuang Zhang, K. J. Malloy, and S. R. J. Brueck, "Enhanced mid-infrared transmission through nanoscale metallic coaxial-aperture arrays," Opt. Express 13, 4406-4413 (2005)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-13-12-4406


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References

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