The surface waves propagating along the contact between the layer with the constant gradient of refractive index and photorefractive crystal

SE Savotchenko - Journal of Optics, 2022 - iopscience.iop.org
We consider the photorefractive crystal with diffusion nonlinearity mechanism contacting
with the linearly graded-index medium. The new types of the surface waves propagating …

[HTML][HTML] Waveguide properties of interface separating a photorefractive crystal with diffusion nonlinearity and an exponential graded-index medium

SE Savotchenko - Physics Letters A, 2022 - Elsevier
Waveguide properties of the planar interface between the photorefractive crystal with
diffusion type of nonlinearity and exponential graded-index medium are described …

TM POLARIZED SURFACE WAVES PROPAGATING ALONG THE SURFACE OF A PHOTOREFRACTIVE CRYSTAL WITH NONLINEAR SELF-FOCUSING COATING

SE Savotchenko - Condensed Matter and Interphases, 2019 - journals.vsu.ru
Objective. A model of a composite waveguide structure based on a photorefractive crystal
with a diffusion mechanism with a nonlinear self-focusing coating is considered. The Kerr …

Peculiarities of the nonlinear surface wave propagation in the composite waveguide with different nonlinearity types of the layers

SE Savotchenko - Optics Communications, 2020 - Elsevier
In this paper, we explore the photorefractive crystal with diffusion nonlinearity mechanism
covered by self-focusing Kerr-type crystal contacting with dielectric medium. Four types of …

Localized states in the crystal characterized by the switching between self-focusing and defocusing Kerr type nonlinearities and the surface interaction

SE Savotchenko - Optical and Quantum Electronics, 2021 - Springer
The theoretical description of the change in optical properties of nonlinear crystal along the
surface caused by the propagation of localized excitations is proposed. The nonlinear …

Nonlinear waves in a crystal with shielding film on the surface and an induced change in the sign of Kerr nonlinearity

SE Savotchenko - Pramana, 2022 - Springer
The nonlinear crystal with sharp-step dependence of dielectric function on the electric field
covered by shielding thin film is considered. A change in the signs of the nonlinearity …

Bound state near a nonlinear defect in a medium with a stepwise nonlinearity

SE Savotchenko - Modern Physics Letters B, 2022 - World Scientific
The new features of the bound state's formation due to the defect nonlinearity and stepwise
medium nonlinearity are found. The Schrödinger equation containing two terms of different …

[PDF][PDF] ТМ поляризованные поверхностные волны, распространяющиеся вдоль поверхности фоторефрактивного кристалла с нелинейным …

СЕ Савотченко - Конденсированные среды и межфазные …, 2019 - scholar.archive.org
Рассмотрена модель композитной волноводной структуры, основанная на
фоторефрактивном кристалле с диффузионным механизмом с нелинейным …

Wave propagation along the interface between the hyperbolic graded-index and photorefractive crystals

SE Savotchenko - mmnp-journal.org
New two types of transverse interface waves propagating along the planar contact the
photorefractive and hyperbolic graded-index crystals are described theoretically. The waves …

Self-Localization of Light Beams in a Medium with Instantaneous Kerr Nonlinearity Switching

SE Savotchenko - Journal of Experimental and Theoretical Physics, 2020 - Springer
A model is proposed for the nonlinear response of a medium in which the permittivity
depending on the field intensity is instantaneously switched when the field amplitude …