Light transmission by subwavelength annular aperture arrays in metallic films

By F. Baida, D. V. Labeke. 2002

201 citations recorded by the source corpus.

We study the spectral response of a metallic film with an engraved 2D periodic structure of annular apertures. We show that an enhanced transmission can be obtained and can reach 90%. The variation of the spectral response as a function of the film thickness from 150 nm to a value of 1.8 μm is also studied. We show that a guided mode in the subwavelength coaxial structure is responsible for this large transmission. A wavelength cut-off exists. We study the transmission characteristics on the optical and geometrical parameters of the array (period, coaxial radii, incident polarization and dielectric constants) using a 3D-FDTD algorithm.

Subfields: Atomic and Molecular Physics, and Optics, Biomedical Engineering, Surfaces, Coatings and Films

View Paper: https://www.semanticscholar.org/paper/5cc05e119b2e0aba8802381e13c4f0d4f3916211

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In Atomic and Molecular Physics, and Optics

In Biomedical Engineering

In Surfaces, Coatings and Films

Citations in the corpus

The role of localized surface plasmon modes in the enhanced transmission of periodic subwavelength apertures (2005, background): “For instance C-shaped apertures [7], slits [8] and tori [9, 10] can all sustain propagative modes which dramatically improves their transmission properties and consequently they are not described by Bethe’s theory.”
Colloquium: Light scattering by particle and hole arrays (2007, background): “More exotic shapes like annular holes have been also simulated (Baida and Van Labeke, 2002; Roberts and McPhedran, 1988) and measured (Fan et al., 2005), with the additional appeal that annular waveguides support always one guided mode at least (Jackson, 1999).”
Surface plasmon subwavelength optics (2003, background): “; the slit can even be wrapped up in the form of an annulu”