Results 11 to 20 of about 1,925,346 (295)
Numerical Modeling of Radiation Focusing by Dielectric Microcylinders with Several Layers
Journal of Biomedical Photonics & Engineering, 2021 In this paper, the light focusing by dielectric microcylinders with several layers was numerically studied by using the finite element method implemented in COMSOL Multiphysics.
Alexandra A. Savelyeva, Elena S. Kozlova
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Circular polarization before and after the sharp focus for linearly polarized light
Компьютерная оптика, 2022 We consider sharp focusing of a linearly polarized light beam. Using the Richards-Wolf formalism, we show that before and after the focal plane there are cross-section regions in which the polarization is circular (elliptical).
S.S. Stafeev, V.D. Zaitsev, V.V. Kotlyar
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Компьютерная оптика, 2023 In this work, the sharp focusing of a laser beam whose initial polarization pattern is formed by superposition of a cylindrical mth-order vector beam and a homogeneous linearly polarized beam is considered theoretically and numerically.
V.V. Kotlyar, S.S. Stafeev, V.D. Zaitsev
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Компьютерная оптика, 2023 Features of the near-field diffraction of Gaussian beams and Laguerre-Gauss modes by silicon subwavelength optical elements with varying relief height were studied in this paper using a finite-difference time-domain method.
D.A. Savelyev
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Focusing of inhomogeneous polarized modes of a laser waveguide dielectric resonator [PDF]
Радиофизика и электроника, 2020 Subject and Purpose. In this paper, spatial power characteristics of laser beams with inhomogeneous spatial polarization are theoretically investigated depending on whether they have moderate or sharp focusing.
A.V. Degtyarev +3 more
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Calculation of the intensity at the sharp focus of a cylindrical vector beam by three methods
Компьютерная оптика, 2023 We conduct a comparative analysis of diffraction fields upon sharply focusing vortex and non-vortex incident beams, calculated using three non-paraxial methods. The methods employed are a finite difference time domain (FDTD) method, a Rayleigh–Sommerfeld
A.G. Nalimov +2 more
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Sharp scattering threshold for the cubic-quintic NLS in the focusing-focusing regime
Journal of Functional Analysis, 2021 Accepted by Journal of Functional ...
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Digital holographic microscopy and focusing methods based on image sharpness [PDF]
Journal of Microscopy, 2014 SummaryDigital holographic microscope allows imaging of opaque and transparent specimens without staining. A digitally recorded hologram must be reconstructed numerically at the actual depth of the object to obtain a focused image. We have developed a high‐resolution digital holographic microscope for imaging amplitude and phase objects with ...
İlhan, Hazar Aytekin +2 more
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Older yet Sharp: No General Age-Related Decline in Focusing Attention
Journal of Experimental Psychology: General, 2023 Attention is a multifaceted mechanism operating on space, features, and memory. Previous studies reported both decline and preservation of attention in aging. Yet, it is unclear if healthy aging differentially affects attentional selection in these domains. To address these inconsistencies, we evaluated the ability to focus attention in a battery of 11
Alessandra S. Souza +2 more
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Spin angular momentum density in the tight focus of a light field with phase and polarization singularities [PDF]
Компьютерная оптика, 2019 For a light field with both phase and polarization singularities at its center, expressions are obtained that describe the distribution of the spin angular momentum (SAM) density in the sharp focal spot of an aplanatic system.
Alexey Kovalev +2 more
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