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Published on: March 19, 2016
Enhanced optical transmission by light coaxing: mechanism of the TEM-mode excitation
1Dépatement d'Optique P.M. Duffeux, Institut FEMTO-ST UMR 6174 CNRS, Université de Franche-Comté, Besançon Cedex, France. fbaida@univ-fcomte.fr
Abstract:
This paper presents a theoretical study showing the mechanism of light transmission through opaque metallic films perforated with nanocoaxial apertures thanks to the excitation of their cutoff-free TEM (Transverse ElectroMagnetic) guided mode. Full three-dimensional Finite Difference Time Domain (3D-FDTD) together with a Body-Of-Revolution FDTD simulation results are presented and discussed in order to optimize this extraordinary transmission. Very promising findings are pointed out opening the path to the design of new devices for both nano-optic and photovoltaic applications.
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