106 citations · 524 across the 21 of their papers we have counts for
5 papers · 2 filters
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…