Results 1 to 10 of about 78,093 (245)
Sharp focusing of beams with V-point polarization singularities [PDF]
Компьютерная оптика, 2021 It is theoretically and numerically shown that when tightly focusing an n-th order vector light field that has the central V-point (at which the linear polarization direction is undetermined), the polarization singularity index n, and a "flower"-shaped ...
V.V. Kotlyar +3 more
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Sharp Focusing of a Hybrid Vector Beam with a Polarization Singularity [PDF]
Photonics, 2021 The key result of this work is the use of the global characteristics of the polarization singularities of the entire beam as a whole, rather than the analysis of local polarization, Stokes and Poincare–Hopf indices.
Victor V. Kotlyar +2 more
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Sharp focusing of a hybridly polarized optical vortex
Компьютерная оптикаIn this work, using the Richards-Wolf formalism, we consider the sharp focusing of optical vortices with hybrid polarization, which combines the properties of azimuthal and circular polarizations.
S.S. Stafeev, V.D. Zaitcev, V.V. Kotlyar
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Sharp and moderate focusing of the combined modes of a terahertz laser
Вісник Харківського національногоуніверситету імені В.Н. Каразіна. Серія: Радіофізика та електроніка, 2023 Background: The problem of sharp and moderate focusing of combined modes of a dielectric waveguide laser is considered. The results of research on different types of focusing of laser beams have a wide range of potential applications, from imaging and ...
O.V. Gurin +7 more
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Focusing fractional-order cylindrical vector beams
Компьютерная оптика, 2021 By numerically simulating the sharp focusing of fractional-order vector beams (0≤m≤1, with azimuthal polarization at m=1 and linear polarization at m=0), it is shown that the shape of the intensity distribution in the focal spot changes from elliptical ...
S.S. Stafeev, V.D. Zaitsev
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Компьютерная оптика, 2021 Spatial intensity distributions of the Laguerre-superGauss modes (1,0) as well as a super-Gaussian beam with radial and circular polarization were investigated versus changes in the height of a diffractive axicon.
D.A. Savelyev
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Optical Polarization Sensor Based on a Metalens
Sensors, 2022 We investigated an optical microsensor of the polarization state of a laser light based on a metalens. In contrast to known polarization sensors based on metasurfaces that deflect different polarization types using various angles to the optical axis, the
Victor Kotlyar +3 more
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Компьютерная оптика, 2022 The focusing features of a super-Gaussian beam, as well as Laguerre-super-Gaussian (1,0) modes with radial and circular polarizations on ring gratings (direct and inverse) with a variable height of individual relief rings were investigated in this paper.
D.A. Savelyev
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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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Sharp focusing of a light field with polarization and phase singularities of an arbitrary order [PDF]
Компьютерная оптика, 2019 Using the Richards-Wolf formalism, we obtain general expressions for all components of the electric and magnetic strength vectors near the sharp focus of an optical vortex with the topological charge m and nth-order azimuthal polarization.
Victor Kotlyar +2 more
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