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Journal Articles Applied Physics Letters Year : 2008

Surface plasmon coupling on metallic film perforated by two-dimensional rectangular hole array

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Abstract

The impact of the periodicity on the dispersion relation of surface modes supported by two dimensional (2D) structured metallic films is experimentally and numerically investigated between 1 and 5 μm. A coupling between modes propagating in two nearly orthogonal directions forming an angle of 77° is evidenced for a rectangular array of holes perforated in a gold film. The coupling results in a narrow band gap for nonzero wavevectors and in a coupled mode with a large density of states and a strong radiative damping. We show that the gap location in the (ω,k) space can be precisely tuned by changing the 2D period.
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Dates and versions

hal-00814509 , version 1 (16-07-2013)

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Christophe Sauvan, Cyrille Billaudeau, Stéphane Collin, Nathalie Bardou, Fabrice Pardo, et al.. Surface plasmon coupling on metallic film perforated by two-dimensional rectangular hole array. Applied Physics Letters, 2008, 92, pp.011125. ⟨10.1063/1.2830333⟩. ⟨hal-00814509⟩
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