Výsledky vyhledávání - "Evgeni Bezus"

Akademický článek

Calculation of a diffractive lens having a fixed focal position at several prescribed wavelengths

Autor: Leonid Doskolovich, Evgeni Bezus, Dmitry Bykov, Roman Skidanov, Nikolay Kazanskiy

Publikováno v: Компьютерная оптика, Vol 43, Iss 6, Pp 946-955 (2019)

A method for calculating a “spectral” diffractive lens, which ensures the preservation of the focal position at several prescribed wavelengths is proposed. The method is based on minimizing the function characterizing the difference between the c

Externí odkaz: https://doaj.org/article/234949f177dc4157b3b67f6def980a0c

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Akademický článek

Formulation of the inverse problem of calculating the optical surface for an illuminating beam with a plane wavefront as the Monge–Kantorovich problem

Autor: Leonid Doskolovich, Albert Mingazov, Dmitry Bykov, Evgeni Bezus

Publikováno v: Компьютерная оптика, Vol 43, Iss 5, Pp 705-713 (2019)

A problem of calculating a refractive surface that forms a required irradiance distribution in the far field in the case of a plane illuminating beam is considered. We show that this problem can be formulated as a mass transportation problem. The spe

Externí odkaz: https://doaj.org/article/ea4e7c4ee9c24e309f85a276ea7e9428

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Akademický článek

Bragg gratings with parasitic scattering suppression for surface plasmon polaritons

Autor: Elena Kadomina, Evgeni Bezus, Leonid Doskolovich

Publikováno v: Компьютерная оптика, Vol 42, Iss 5, Pp 800-806 (2018)

In the present work, we numerically study the performance (reflectance and scattering /absorption losses) of dielectric Bragg gratings for surface plasmon polaritons using a rigorous coupled-wave analysis technique. We demonstrate that the main reaso

Externí odkaz: https://doaj.org/article/88b06324692a405cb325432a0dbfbcf8

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Akademický článek

Multifocal spectral diffractive lens

Autor: Leonid Doskolovich, Evgeni Bezus, Nikolay Kazanskiy

Publikováno v: Компьютерная оптика, Vol 42, Iss 2, Pp 219-226 (2018)

We present a method for calculating a spectral multifocal diffractive lens that forms a given set of fixed-position foci at multiple operating wavelengths. It is based on minimizing a function represented as a squared absolute value of difference bet

Externí odkaz: https://doaj.org/article/32097d0cedc24ca7abf095781ba08bc2

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Akademický článek

On the relation between the propagation constant of Bloch surface waves and the thickness of the upper layer of a photonic crystal

Autor: Evgeni Bezus, Dmitry Bykov, Leonid Doskolovich

Publikováno v: Компьютерная оптика, Vol 42, Iss 1, Pp 22-27 (2018)

We consider the derivation of a dispersion relation of Bloch surface waves supported by interfaces between a semi-infinite one-dimensional photonic crystal and a homogeneous medium. From the derived dispersion relation, we obtain an explicit analytic

Externí odkaz: https://doaj.org/article/873bc82af613484eb81ff437f3e1ba2c

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