Microscopic theory of the extraordinary optical transmission

Haitao Liu and Philippe Lalanne ()
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Haitao Liu: Laboratoire Charles Fabry de l’Institut d’Optique, CNRS, Univ. Paris-Sud, Campus Polytechnique, RD 128, 91127 Palaiseau cedex, France
Philippe Lalanne: Laboratoire Charles Fabry de l’Institut d’Optique, CNRS, Univ. Paris-Sud, Campus Polytechnique, RD 128, 91127 Palaiseau cedex, France

Nature, 2008, vol. 452, issue 7188, 728-731

Abstract: Extraordinary light 'Extraordinary optical transmission' — named from the title of the 1998 Nature paper that introduced the phenomenon — occurs when light passes through a metal film peppered with holes smaller than the wavelength of the light. At certain wavelengths, the amount of light transmitted is much larger than expected for such small openings. The search for an explanation has centred on so-called surface plasmons, electronic excitations in a metal film thought to promote light transmission, but the physical mechanisms involved are hotly debated. Haitao Liu and Philippe Lalanne have now developed a theory that reconciles various different views by taking account of surface plasmon modes as well as other electromagnetic fields. The new model accurately predicts various features in the transmission spectra and may be used as a basis for the design of nano-optics devices.

Date: 2008
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DOI: 10.1038/nature06762

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