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We study both frequency and transmission spectrum of finite 1D and 2D array of the dielectric cylinders. In particular we are interested in the spectral properties of a finite one-dimensional chain of the dielectric cylinders with periodically modulated refractive index which satisfies the condition of PT symmetry which resembles the system considered recently by Phang et al. [Sci. Reports 6, 2045...
We have studied theoretically guiding structures based on the highly-dispersive polaritonic InSb semiconductor material, in the presence of an external magnetic field. The Voigt magnetooptic configuration has been imposed to enable nonreciprocity (and one-way propagation) bringing new interesting phenomena in connection with magnetoplasmons. For that purpose, we have developed an efficient two dimensional...
We explore numerically effects associated with synergetic interplay between the microscopic and macroscopic resonance mechanisms in the frequency and transmission spectrum of two-dimensional array of metallic rods embedded in a vacuum. Likewise in the band structure of 2D photonic crystal with dielectric rods [P. Markoš, Phys. Rev. A 92 043814 (2015)] one can distinguish in the spectrum of periodic...
We investigate theoretically the propagation of a surface plasmon polariton(SPP) propagating along the metal/air interface where metallic part consists of two metallic sections with a periodically modulated interface between them. We find that such a structure exhibits asymmetric transmittance for a SPP incident on it from opposite sides. This asymmetric transmission originates from diffraction which...
By using the finite-difference time-domain method we have investigated the propagation of a surface plasmon polariton on a metallic grating consisting of N equally spaced rectangular grooves, each with the same width but with varying depths. We find that the transmissivity of the surface plasmon polariton, and the power radiated into the vacuum, as functions of its frequency consist of N equally spaced...
In this contribution, we present the main results of our joint scientific theoretical project with the Czech Science Foundation (2010–2013) Physics and advanced simulations of photonic and plasmonic structures, arisen from the cooperation of three laboratories of Czech Technical University in Prague, Institute of Photonics and Electronics of the Academy of Sciences of the Czech Republic, and Brno...
We have shown that a square array of scatterers deposited on a metal surface in a triangular mesh to which a diffractive structure is added to the left side reveals asymmetric transmission of surface plasmon polaritons. This asymmetric transmission of a surface plasmon polariton does not require either electrical nonlinearity or the presence of a magnetic field but is a consequence solely of the geometry...
By using a generalized finite-difference time-domain(FDTD) method which allows to study the propagation of electromagnetic(EM) waves through media with tensor magneto-optic permittivity we studied transport properties of the one-way waveguide consisting of the interface between a metal and uniformly magnetized 2D photonic crystal fabricated from a transparent dielectric magneto-optic(MO) material...
It has been shown recently that a low-energy collective excitation mode that can be found on bare metal surfaces has acoustic(linear) dispersion and arises due to the coexistence of a partially occupied quazi-2D surface state band with the underlying 3D bulk continuum. Since acoustic dispersion allows the confinement of light on small surface areas in a broad frequency range, it becomes relevant for...
We have studied numerically transport properties unidirectional waveguide formed by the interface of a metal and two-dimensional photonic crystal where only a forward propagating surface plasmon polariton (SPP) mode is allowed to propagate. To investigate transport properties of the structures within this frequency range we used finite-difference time-domain (FDTD) method based on Z-transform that...
We studied the transmittance of a random amplifying medium near the lasing threshold by using the convergence criterion proposed by Nam and Zhang [Phys. Rev. B66 73101, 2002] that allows separating the physical solutions of the time-independent Maxwell equations from the unphysical ones and describing critical size Lc of a random system in statistical terms. We found that the dependence of the critical...
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