Article ID Journal Published Year Pages File Type
1543231 Photonics and Nanostructures - Fundamentals and Applications 2006 7 Pages PDF
Abstract

This paper presents experimental studies of the enhanced light transmission through metallic films pierced by subwavelength annular apertures. Two different methods (e-beam lithography and focused ion beam) have been used to build the nano-structures. We have experimentally recorded their far-field spectral response in the visible range and the optical near-field above the nano-structures when they are excited at 633 nm. The spectral response exhibits a transmission peak at 700 nm with maximum efficiency around 16%. The near-field exhibits a characteristic two-lobe structure just above the aperture. Finite difference time domain (FDTD) simulations reproduce quite well the experimental results.

Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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