Negative refraction in a prism made of stacked subwavelength hole arrays
Fecha
2008Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión publicada / Argitaratu den bertsioa
Impacto
|
10.1364/OE.16.000560
Resumen
Metamaterial structures are artificial materials that show
unconventional electromagnetic properties such as negative refraction
index, perfect lenses, and invisibility. However, losses are one of the big
challenges to be surpassed in order to design practical devices at optical
wavelengths. Here we report negative refraction in a prism engineered by
stacked sub-wavelength hole arrays. These stru ...
[++]
Metamaterial structures are artificial materials that show
unconventional electromagnetic properties such as negative refraction
index, perfect lenses, and invisibility. However, losses are one of the big
challenges to be surpassed in order to design practical devices at optical
wavelengths. Here we report negative refraction in a prism engineered by
stacked sub-wavelength hole arrays. These structures exhibit inherently an
extraordinary optical transmission which could offer a solution to the
problem of losses at optical wavelengths. It is shown the possibility to
obtain negative indices of refraction starting from near to zero values. Our
work demonstrates by a direct experiment the feasibility of engineering
negative refraction by just drilling sub-wavelength holes in metallic plates
and stacking them. [--]
Materias
Stacked sub-wavelength hole arrays,
Losses at optical wavelengths,
Negative refraction,
Prisms,
Extraordinary optical transmission
Editor
Optical Society of America
Publicado en
Optics Express, Vol. 16, Issue 2, pp. 560-566 (2008)
Departamento
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa eta Elektronikoa Saila
Versión del editor
Entidades Financiadoras
This work was supported by Spanish Government and E.U. FEDER under contracts
TEC2005-06923-C03-01 and UPN-00–33–008.