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Photonic nanojets with mesoscale high-index dielectric particles
(AIP Publishing, 2019)
Artículo / Artikulua,
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, ...
Exploiting the dispersion of the double-negative-index fishnet metamaterial to create a broadband low-profile metallic lens
(Optical Society of America, 2015)
info:eu-repo/semantics/article,
Metamaterial lenses with close values of permittivity and
permeability usually display low reflection losses at the expense of narrow
single frequency operation. Here, a broadband low-profile lens is designed
by exploiting ...
Labyrinth metasurface absorber for ultra-high-sensitivity terahertz thin film sensing
(Wiley, 2018)
Artículo / Artikulua,
In this work, a labyrinth metasurface sensor operating at the low‐frequency edge of the THz band is presented. Its intricate shape leads to a high electric field confinement on the surface of the structure, resulting in ...
Multiband one-way polarization conversion in complementary split-ring resonator based structures by combining chirality and tunneling
(Optical Society of America, 2015)
info:eu-repo/semantics/article,
Multiband one-way polarization conversion and strong
asymmetry in transmission inspired by it are demonstrated in ultrathin
sandwiched structures that comprise two twisted aperture-type arrays of
complementary split-ring ...
Terahertz epsilon-near-zero graded-index lens
(Optical Society of America, 2013)
info:eu-repo/semantics/article,
An epsilon-near-zero graded-index converging lens with planar
faces is proposed and analyzed. Each perfectly-electric conducting (PEC)
waveguide comprising the lens operates slightly above its cut-off frequency
and has ...
Millimeter-wave phase resonances in compound reflection gratings with subwavelength grooves
(Optical Society of America, 2010)
info:eu-repo/semantics/article,
Experimental evidence of phase resonances in a dual-period
reflection structure comprising three subwavelength grooves in each
period is provided in the millimeter-wave regime. We have analyzed and
measured the response ...
Soret fishnet metalens antenna
(Springer Nature, 2015)
info:eu-repo/semantics/article,
At the expense of frequency narrowing, binary amplitude-only diffractive optical elements emulate refractive
lenses without the need of large profiles. Unfortunately, they also present larger Fresnel reflection loss ...
Focus on terahertz plasmonics
(IOP Publishing, 2015)
info:eu-repo/semantics/article,
Plasmonics is one of the growing fields in modern photonics that has garnered increasing interest over
the last few years. In this focus issue, the specific challenges concerning terahertz plasmonics have
been addressed ...
Planar holographic metasurfaces for terahertz focusing
(Springer Nature, 2015)
info:eu-repo/semantics/article,
Scientists and laymen alike have always been fascinated by the ability of lenses and mirrors to control light.
Now, with the advent of metamaterials and their two-dimensional counterpart metasurfaces, such
components can ...
Super-oscillatory metalens at terahertz for enhanced focusing with reduced side lobes
(MDPI, 2018)
Artículo / Artikulua,
In this paper, we design and numerically demonstrate an ultra-thin super-oscillatory metalens with a resolution below the diffraction limit. The zones of the lens are implemented using metasurface concepts with hexagonal ...