Listar por tema "Photonic nanojets"
Mostrando ítems 1-7 de 7
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All-dielectric periodic terajet waveguide using an array of coupled cuboids
In this paper, the recently proposed technique to produce photonic jets (terajets at terahertz (THz) frequencies) using 3D dielectric cuboids is applied in the design of a mesoscale cuboid-chain wave- guide. The chains are ... -
Comprehensive analysis of photonic nanojets in 3D dielectric cuboids excited by surface plasmons
In this paper we study the excitation of photonic nanojets (PNJ) in 3D dielectric cuboids by surface plasmons at telecommunication wavelengths. The analysis is done using the effective refractive index approach. It is shown ... -
Increasing surface plasmons propagation via photonic nanojets with periodically spaced 3D dielectric cuboids
A structure based on periodically arranged 3D dielectric cuboids connected by photonic nanojets (PNJs) is proposed with the aim of increasing the propagation distance of surface plasmon polaritons (SPPs) at the telecom ... -
Localized photonic jets from flat, three-dimensional dielectric cuboids in reflection mode
A photonic jet (a terajet at terahertz frequencies) commonly denotes a specific, spatially localized region in the near field on the front side of a dielectric particle with a diameter comparable with the wavelength ... -
Multifrequency focusing and wide angular scanning of terajets
In the past, it has been demonstrated that it is possible to produce terajets with high resolution at its focus using 3D dielectric cuboids under plane-wave illumination. Here, a systematic study of the harmonic and angular ... -
Photonic nanojets with mesoscale high-index dielectric particles
In this work, we demonstrate the ability of high-index dielectric particles immersed in air to generate photonic nanojets with extreme resolution (∼0.06λ0). Both 2D (cylindrical) and 3D (spherical) particles are analyzed, ... -
Terajets produced by dielectric cuboids
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 ...