Pacheco-Peña, VíctorBeruete Díaz, MiguelMinin, Igor V.Minin, Oleg V.2016-07-272016-07-2720140003-6951 (Print)1077-3118 (Electronic)10.1063/1.4894243https://academica-e.unavarra.es/handle/2454/21071The 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/10.1063/1.4894243The 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.application/pdfeng© 2014 AIP Publishing LLC. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.TerajetsDielectric cuboidsPhotonic nanojetsinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess