247 citations · 891 across the 26 of their papers we have counts for
26 papers
Coherent perfect absorption and lasing in bimodal Fabry-Pérot interferometers
Dmitry A. Bykov, Evgeni A. Bezus, Leonid L. Doskolovich
Bimodal Fabry-Pérot interferometer is a model generalizing the conventional Fabry-Pérot interferometer, in which not one but two kinds of waves propagate between the interfaces. He…
Optical computation of the divergence of a vector field using a metal-dielectric multilayer
Leonid L. Doskolovich, Artem I. Kashapov, Evgeni A. Bezus +1
We theoretically describe the optical computation of the divergence of a two-dimensional vector field, which is composed by the transverse electric field components of an incident…
Topological properties of reflection zeros of optical differentiators based on layered metal-dielectric-metal structures
Artem I. Kashapov, Evgeni A. Bezus, Dmitry A. Bykov +2
We investigate the topological properties of reflection zeros of three-layer structures consisting of a dielectric layer sandwiched between two metal layers, which can be used as o…
Design of cascaded diffractive optical elements generating different intensity distributions at several operating wavelengths
Georgy A. Motz, Daniil V. Soshnikov, Leonid L. Doskolovich +3
We consider the design of cascaded diffractive optical elements (DOEs) for generating specified intensity distributions for several incident beams with different wavelengths. For e…
Design of diffractive neural networks solving different classification problems at different wavelengths
Georgy A. Motz, Leonid L. Doskolovich, Daniil V. Soshnikov +4
We consider the problem of designing a diffractive neural network (DNN) consisting of a set of sequentially placed phase diffractive optical elements (DOEs) and intended for the op…
Designing robust diffractive neural networks with improved transverse shift tolerance
Daniil V. Soshnikov, Leonid L. Doskolovich, Georgy A. Motz +3
A wide range of practically important problems is nowadays efficiently solved using artificial neural networks. This gave momentum to intensive development of their optical impleme…
Vectorial spatial differentiation of optical beams with metal-dielectric multilayers enabled by spin Hall effect of light and resonant reflection zero
Leonid L. Doskolovich, Artem I. Kashapov, Evgeni A. Bezus +1
We theoretically describe and numerically investigate the operation of "vectorial" optical differentiation of a three-dimensional light beam, which consists in simultaneous computa…
How many parameters do we need to obtain a BIC in symmetric and asymmetric structures?
Dmitry A. Bykov, Evgeni A. Bezus, Albert A. Mingazov +1
Photonic bound states in the continuum (BICs) are nonradiating eigenmodes of structures with open scattering channels. Most often, BICs are studied in highly symmetric structures w…
On-chip spatiotemporal optical vortex generation using an integrated metal-dielectric resonator
Artem I. Kashapov, Leonid L. Doskolovich, Evgeni A. Bezus +2
We theoretically demonstrate the possibility of generating a spatiotemporal optical vortex (STOV) beam in a dielectric slab waveguide. The STOV is generated upon reflection of a sp…
Integrated flat-top reflection filters operating near bound states in the continuum
Leonid L. Doskolovich, Evgeni A. Bezus, Dmitry A. Bykov
We propose and theoretically and numerically investigate narrowband integrated filters consisting of identical resonant dielectric ridges on the surface of a single-mode dielectric…
Resonant properties of composite structures consisting of several resonant diffraction gratings
Leonid L. Doskolovich, Evgeni A. Bezus, Dmitry A. Bykov +2
We theoretically and numerically investigate resonant optical properties of composite structures consisting of several subwavelength resonant diffraction gratings separated by homo…
Analytical design of flat-top transmission filters composed of several resonant structures
Leonid L. Doskolovich, Nikita V. Golovastikov, Dmitry A. Bykov +1
Resonant properties of composite structures consisting of several identical resonant diffractive structures (e.g. multilayer thin-film structures or guided-mode resonance gratings)…
Topologically protected bound states in the continuum and strong phase resonances in integrated Gires-Tournois interferometer
Dmitry A. Bykov, Evgeni A. Bezus, Leonid L. Doskolovich
Photonic bound states in the continuum (BICs) are eigenmodes with an infinite lifetime, which coexist with a continuous spectrum of radiating waves. BICs are not only of great theo…
Coupled-wave formalism for bound states in the continuum in guided-mode resonant gratings
Dmitry A. Bykov, Evgeni A. Bezus, Leonid L. Doskolovich
We present simple yet extremely accurate coupled-wave models describing the formation of bound states in the continuum (BICs) in 1D-periodic guided-mode resonant gratings (GMRGs) c…
Bound states in the continuum and high-Q resonances supported by a dielectric ridge on a slab waveguide
Evgeni A. Bezus, Dmitry A. Bykov, Leonid L. Doskolovich
We investigate the diffraction of guided modes of a dielectric slab waveguide on a simple integrated structure consisting of a single dielectric ridge on the surface of the wavegui…
Designing double freeform surfaces for collimated beam shaping with optimal mass transportation and linear assignment problems
Leonid L. Doskolovich, Dmitry A. Bykov, Evgeniy S. Andreev +2
We propose a method for designing refractive optical elements for collimated beam shaping. In this method, the problem of finding a ray mapping is formulated as a linear assignment…
Spatial differentiation and integration of optical beams in a slab waveguide by a single dielectric ridge
Evgeni A. Bezus, Leonid L. Doskolovich, Dmitry A. Bykov +1
We show that a very simple structure consisting of a single subwavelength dielectric ridge on the surface of a slab waveguide enables spatial differentiation and integration of the…
First-order optical spatial differentiator based on a guided-mode resonant grating
Dmitry A. Bykov, Leonid L. Doskolovich, Andrey A. Morozov +4
We present an experimental demonstration of a subwavelength diffraction grating performing first-order differentiation of the transverse profile of an incident optical beam with re…
Multifocal diffractive lens generating several fixed foci at different design wavelengths
Leonid L. Doskolovich, Evgeni A. Bezus, Andrey A. Morozov +3
We propose a method for designing multifocal diffractive lenses generating prescribed sets of foci with fixed positions at several different wavelengths. The method is based on min…
Two-groove narrowband transmission filter integrated in a slab waveguide
Leonid L. Doskolovich, Evgeni A. Bezus, Dmitry A. Bykov
We propose a simple integrated narrowband filter consisting of two grooves on the surface of a slab waveguide. Spectral filtering is performed in transmission at oblique incidence…
On the use of the Fourier modal method for calculation of localized eigenmodes of integrated optical resonators
Dmitry A. Bykov, Leonid L. Doskolovich
We propose the generalization of the Fourier modal method aimed at calculating localized eigenmodes of integrated optical resonators. The method is based on constructing the analyt…
Fano line shape in photonic crystal slabs
Dmitry A. Bykov, Leonid L. Doskolovich
We study the resonant properties of photonic crystal slabs theoretically. An Fano line shape that approximates the transmission (reflection) spectrum is obtained. This…
Controlling the surface plasmon excitation efficiency using dielectric magneto-optical cavity
Dmitry A. Bykov, Leonid L. Doskolovich
The diffraction of a plane wave by a magneto-optical cavity located on a metal interface is investigated theoretically. We show that the excitation of localized eigenmodes of the c…
Numerical methods for calculating poles of the scattering matrix with applications in grating theory
Dmitry A. Bykov, Leonid L. Doskolovich
Waveguide and resonant properties of diffractive structures are often explained through the complex poles of their scattering matrices. Numerical methods for calculating poles of t…