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 (5x) 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

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References

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Appl. Phys. B (1)

F. I. Baida, D. Van Labeke, G. Granet, A. Moreau and A. Belkhir, �??Origin of the super-enhanced light transmission through a 2-D metallic annular aperture array: a study of photonic bands,�?? Appl. Phys. B 79, 1-8 (2004).
[CrossRef]

J. Opt. A: Pure Appl. Opt. (1)

A. Degiron and T. W. Ebbesen, �??The role of localized surface plasmon modes in the enhanced transmission of periodic subwavelength apertures,�?? J. Opt. A: Pure Appl. Opt. 7, S90-S96 (2005).
[CrossRef]

Microelectron. Eng. (1)

S. R. J. Brueck, S. H. Zaidi, X. Chen and Z. Zhang, �??Interferometric lithography - from periodic arrays to arbitrary patterns,�?? Microelectron. Eng. 42, 145-148 (1998).
[CrossRef]

Nature (London) (2)

T. W. Ebbesen, H. J. Lezec, H. F. Ghaemi, T. Thio and P. A. Wolff, �??Extraordinary optical transmission through sub-wavelength hole arrays,�?? Nature (London) 391, 667-669 (1998).
[CrossRef]

W. L. Barnes, A. Dereux and T. W. Ebbesen, �??Surface plasmon subwavelength optics,�?? Nature (London) 424, 824-830 (2003).
[CrossRef]

Opt. Commun (1)

A. Krishnan, T. Thio, T. J. Kim, H. J. Lezec, T. W. Ebbesen, P. A. Wolff, J. Pendry, L. Martin-Moreno, F. J. Garcia-Vidal, �??Evanescently coupled resonance in surface plasmon enhanced transmission,�?? Opt. Commun. 200, 1-7 (2001).
[CrossRef]

Opt. Commun. (2)

F. I. Baida and D. Van Labeke, �??Light transmission by subwavelength annular aperture arrays in metallic films,�?? Opt. Commun. 209, 17-22 (2002).
[CrossRef]

C. Genet, M. P. Van Exter and J. P. Woerdman, �??Fano-type interpretation of red shifts and red tails in hole array transmission spectra,�?? Opt. Commun. 225, 331-336 (2003).
[CrossRef]

Opt. Express (2)

Opt. Lett. (1)

Phys, Rev. Lett. (1)

H. F. Schouten, N. Kuzmin, G. Dubois, T. D. Visser, G. Gbur, P. F. A. Alkemade, H. Blok, G. W. �??t Hooft, D. Lenstra and E. R. Eliel, �??Plasmon-Assisted two-slit transmission: Young�??s experiment revisited,�?? Phys, Rev. Lett. 94, 053901 (2005)
[CrossRef]

Phys. Rev. Lett. (2)

W. Fan, S. Zhang, B. Minhas, K. J. Malloy and S. R. J. Brueck, �??Enhanced infrared transmission through subwavelength coaxial metallic arrays,�?? Phys. Rev. Lett. 94, 033902 (2005).
[CrossRef]

W. L. Barnes, W. A. Murray, J. Dintinger, E. Devaux and T. W. Ebbesen, �??Surface plasmon polaritons and their role in the enhanced transmission of light through periodic arrays of subwavelength holes in a metal film,�?? Phys. Rev. Lett. 92, 107401 (2004).
[CrossRef]

Science (1)

H.J. Lezec, A. Degiron, E. Devaux, R.A. Linke, L. Martin-Moreno, F.J. Garcia-Vidal and T.W. Ebbesen, �??Beaming light from a subwavelength aperture,�?? Science 297, 820�??822 (2002).
[CrossRef]

Other (1)

N. Marcuvitz, Waveguide handbook, (New York: McGraw-Hill, 1951).

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