Abstract
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. 46λ0 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.
| Original language | English |
|---|---|
| Article number | 084102 |
| Journal | Applied Physics Letters |
| Volume | 105 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 25 Aug 2014 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
Cite this
Terajets produced by dielectric cuboids. / Pacheco-Peña, V.; Beruete, M.; Minin, I. V.; Minin, Oleg V.
In: Applied Physics Letters, Vol. 105, No. 8, 084102, 25.08.2014.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Terajets produced by dielectric cuboids
AU - Pacheco-Peña, V.
AU - Beruete, M.
AU - Minin, I. V.
AU - Minin, Oleg V.
PY - 2014/8/25
Y1 - 2014/8/25
N2 - 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. 46λ0 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.
AB - 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. 46λ0 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.
UR - http://www.scopus.com/inward/record.url?scp=84907319877&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84907319877&partnerID=8YFLogxK
U2 - 10.1063/1.4894243
DO - 10.1063/1.4894243
M3 - Article
VL - 105
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 8
M1 - 084102
ER -