Terajets produced by dielectric cuboids
Fecha
2014Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión publicada / Argitaratu den bertsioa
Impacto
|
10.1063/1.4894243
Resumen
The capability of generating terajets using three-dimensional (3D) dielectric cuboids working at terahertz (THZ) frequencies (as analogues of nanojets in the infrared band) is introduced and studied numerically. The focusing performance of the terajets is evaluated in terms of the transversal full width at half maximum (FWHM) along x- and y-directions using different refractive indices for a 3D d ...
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The capability of generating terajets using three-dimensional (3D) dielectric cuboids working at terahertz (THZ) frequencies (as analogues of nanojets in the infrared band) is introduced and studied numerically. The focusing performance of the terajets is evaluated in terms of the transversal full width at half maximum (FWHM) along x- and y-directions using different refractive indices for a 3D dielectric cuboid with a fixed geometry, obtaining a quasi-symmetric terajet with a subwavelength resolution of 0.46 wavelengths when the refractive index is n=1.41. Moreover, the backscattering enhancement produced when metal particles are introduced in the terajet region is demonstrated for a 3D dielectric cuboid and compared with its two-dimensional (2D) counterpart. The results of the jet generated for the 3D case are experimentally validated at sub-THZ waves, demonstrating the ability to produce terajets using 3D cuboids. [--]
Materias
Terajets,
Dielectric cuboids,
Photonic nanojets
Editor
AIP Publishing
Publicado en
Applied Physics Letters 105, 084102 (2014)
Notas
The following article appeared Pacheco-Pena, V., Beruete, M., Minin, I., & Minin, O. (n.d). Terajets produced by dielectric cuboids. Applied Physics Letters, 105(8), doi: 10.1063/1.4894243, and may be found at http://dx.doi.org/10.1063/1.4894243
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 in part by the Spanish Government
under Contract Consolider Engineering Metamaterials
CSD2008-00066 and Contract TEC2011-28664-C02-01.
V.P.-P. is sponsored by Spanish Ministerio de Educacion,
Cultura y Deporte under Grant FPU AP-2012-3796. M.B. is
sponsored by the Spanish Government via RYC-2011-08221.