59 citations · 174 across the 19 of their papers we have counts for
19 papers
Metamaterial-induced-transparency engineering through quasi-bound states in the continuum by using dielectric cross-shaped trimers
Maryam Ghahremani, Carlos J. Zapata-Rodriguez
This study presents a novel approach to activate a narrowband transparency line within a reflecting broadband window in all-dielectric metasurfaces, in analogy to the electromagnet…
Out-of-plane emission of trions in monolayer WSe2 revealed by whispering gallery modes of dielectric microresonators
D. Andres-Penares, M. K. Habil, A. Molina-Sánchez +3
The manipulation of light emitted by two-dimensional semiconductors grounds forthcoming technologies in the field of on-chip communications. However, these technologies require fro…
Lasing condition for trapped modes in subwavelength--wired PT--symmetric resonators
Mauro Cuevas, Mojtaba Karimi, Carlos J Zapata-Ropdriguez
The ability to control the laser modes within a subwavelength resonator is of key relevance in modern optoelectronics. This work deals with the theoretical research on optical prop…
Scattering of electromagnetic waves from a graphene-coated thin cylinder of left-handed metamaterial
Hamid Pashaeiadl, Mahin Naserpour, Carlos J. Zapata-Rodriguez
In this paper we explored the scattering behavior of thin cylinders made of LHM and coated by a monoatomic graphene layer. A spectral tunability of the resonance peaks is evidenced…
Accurate expansion of cylindrical paraxial waves for its straightforward implementation in electromagnetic scattering
Mahin Naserpour, Carlos J. Zapata-Rodriguez
The evaluation of vector wave fields can be accurately performed by means of diffraction integrals, differential equations and also series expansions. In this paper, a Bessel serie…
Plano-concave microlenses with epsilon-near-zero surface-relief coatings for efficient shaping of nonparaxial optical beams
Mahin Naserpour, Carlos J. Zapata-Rodriguez, Mahdieh Hashemi
Epsilon-near-zero (ENZ) materials, including artificial metamaterials, have been advanced to mold laser beams and antenna-mediated radiated waves. Here we propose an efficient meth…
Tunable invisibility cloaking by using graphene-coated nanowires
Mahin Naserpour, Carlos J. Zapata-Rodriguez, Slobodan M. Vukovic +1
We investigate, both theoretically and numerically, a graphene-coated nano-cylinder illuminated by a plane electromagnetic wave in THz range of frequencies. We have derived an anal…
Optimization of multilayered nanotubes for maximal scattering cancellation
Carlos Díaz-Aviñó, Mahin Naserpour, Carlos J. Zapata-Rodríguez
An optimization for multilayered nanotubes that minimizes the scattering efficiency for a given polarization is derived. The cylindrical nanocavities have a radially periodic distr…
Tunable scattering cancellation of light using anisotropic cylindrical cavities
Carlos Díaz-Aviñó, Mahin Naserpour, Carlos J. Zapata-Rodríguez
Engineered core-shell cylinders are good candidates for applications in invisibility and cloaking.In particular, hyperbolic nanotubes demonstrate tunable ultra-low scattering cross…
Dyakonov surface waves in lossy metamaterials
A. J. Sorni, M. Naserpour, C. J. Zapata-Rodríguez +1
We analyze the existence of localized waves in the vicinities of the interface between two dielectrics, provided one of them is uniaxial and lossy. We found two families of surface…
Light capsules shaped by curvilinear meta-surfaces
Mahin Naserpour, Carlos J. Zapata-Rodriguez, A. Zakery +1
We propose a simple yet efficient method for generating in-plane hollow beams with a nearly-full circular light shell without the contribution of backward propagating waves. The me…
Nonparaxial shape-preserving Airy beams with Bessel signature
Carlos J. Zapata-Rodriguez, Mahin Naserpour
Spatially accelerating beams that are solutions to the Maxwell equations may propagate along incomplete circular trajectories, after which diffraction broadening takes over and the…
Hybrid surface waves in semi-infinite metal-dielectric lattices
Juan J. Miret, Carlos J. Zapata-Rodriguez, Zoran Jaksic +2
We investigate surface waves at the boundary between a semi-infinite layered metal-dielectric nanostructure cut normally to the layers and a semi-infinite dielectric. Spatial dispe…
Oblique surface waves at an interface of metal-dielectric superlattice and isotropic dielectric
Slobodan M. Vukovic, Juan J. Miret, Carlos J. Zapata-Rodriguez +1
We investigate the existence and the dispersion characteristics of surface waves that propagate at an interface between metal-dielectric superlattice and isotropic dielectric. With…
Surface-assisted ultralocalization in nondiffracting beams
Juan J. Miret, Carlos J. Zapata-Rodriguez
We present a family of localized radiation modes in multilayered periodic media, where in-phase superposition of p-polarized waves leads to radiative confinement around the beam ax…
Diffraction-free beams in thin films
Carlos J. Zapata-Rodriguez
The propagation and transmission of Bessel beams through nano-layered structures has been discussed recently. Within this framework we recognize the formation of unguided diffracti…
Asymptotic analysis of the Z-scan trace to determine multiphoton absorption coefficients
Carlos J. Zapata-Rodriguez
We present a theoretical analysis of open aperture -scan signatures for materials exhibiting an absorption admixture of different multiphoton processes. Based on a polynomial ex…
Debye representation of dispersive focused waves
Carlos J. Zapata-Rodriguez
We report on a matrix-based diffraction integral that evaluates the focal field of any diffraction-limited axisymmetric complex system. This diffraction formula is a generalization…
Fractal Photonic Crystal Waveguides
Juan A. Monsoriu, Carlos J. Zapata-Rodriguez, Enrique Silvestre +1
We propose a new class of one-dimensional (1D) photonic waveguides: the fractal photonic crystal waveguides (FPCWs). These structures are photonic crystal waveguides (PCWs) etched…