Negative refraction through an extraordinary transmission left-handed metamaterial slab

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Date
2009Version
Acceso abierto / Sarbide irekia
Type
Artículo / Artikulua
Version
Versión publicada / Argitaratu den bertsioa
Impact
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10.1103/PhysRevB.79.195107
Abstract
In this work we present numerical and experimental results of negative refraction through a negative index
metamaterial based on miniaturized extraordinary transmission stacked subwavelength hole arrays, also known
as stacked fishnet structures, working in the millimeter wave range. Analytical transmittance as a function of
frequency and tangential momentum shows the conditions under which neg ...
[++]
In this work we present numerical and experimental results of negative refraction through a negative index
metamaterial based on miniaturized extraordinary transmission stacked subwavelength hole arrays, also known
as stacked fishnet structures, working in the millimeter wave range. Analytical transmittance as a function of
frequency and tangential momentum shows the conditions under which negative refraction is expected. Due to
the role of the gap-surface-plasmon-polariton-like mode that gives rise to the resonant magnetic response of
this structure, strong dispersion with the angle of incidence is expected. Experimental results using a quasioptical
bench in the millimeter wave band demonstrate negative refraction and, besides, reasonable agreement
with the simulation results is obtained. A discussion based on leaky waves serves to qualitatively explain the
main features. The presented results may find application in the design of new lenses and devices both in the
microwave, terahertz, and optical ranges. [--]
Subject
Negative refraction,
Left-handed metamaterials
Publisher
American Physical Society
Published in
Physical Review B, 79(19), pp. 195107-1-6, (2009)
Departament
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa eta Elektronikoa Saila
Publisher version
Sponsorship
This work was supported by the Spanish Government under
contract Consolider “Engineering Metamaterials,”
through Contract No. CSD2008-00066.