90% Extraordinary optical transmission in the visible range through annular aperture metallic arrays.
We demonstrate what we believe to be the first experimental extraordinary optical transmission (EOT) of up to 90%, thanks to a well-identified guided mode that propagates through annular apertures engraved into an optically thick silver layer. In spite of the metal losses, high transmission can be obtained by adjusting the geometrical parameters of the fabricated structure, as was already theoretically demonstrated. To our knowledge, this is the first study showing such a large transmission in the visible range.
Poujet
Yannick
Y
Institut FEMTO-ST, Université de Franche-Comté, CNRS, 16 route de Gray, 25030 Besançon, France.
Salvi
Jérôme
J
Baida
Fadi Issam
FI