Results 21 to 30 of about 40,586 (284)
Frontiers in Physics, 2021 We report on the effects associated with photonic nanojet (PNJ) formation under illumination of a metallic spherical particle with a focused light beam with polarization singularity.
D. O. Plutenko, M. V. Vasnetsov
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Vector Beams with Only Transverse Intensity at Focus
Applied Sciences, 2023 In this work, the tight focusing of vector beams with azimuthal polarization and beams with a V-line of polarization singularity (sector azimuthal polarization) was simulated numerically using the Richards–Wolf formulas.
Sergey S. Stafeev +4 more
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Spin angular momentum of Gaussian beams with several polarization singularities
Компьютерная оптика, 2023 We study a paraxial vector Gaussian beam with several polarization singularities located on a circle. Such a beam is superposition of a cylindrically polarized Laguerre-Gaussian beam and a linearly polarized Gaussian beam.
A.A. Kovalev, V.V. Kotlyar
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Higher Order Polars of Quasi-Ordinary Singularities [PDF]
International Mathematics Research Notices, 2020 Abstract A quasi-ordinary polynomial is a monic polynomial with coefficients in the power series ring such that its discriminant equals a monomial up to unit. In this paper, we study higher derivatives of quasi-ordinary polynomials, also called higher order polars. We find factorizations of these polars.
García Barroso, Evelia Rosa +1 more
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Polarization singularities in the clear sky [PDF]
, 2004 Ideas from singularity theory provide a simple account of the pattern of polarization directions in daylight. The singularities (two near the Sun and two near the anti-Sun) are points in the sky where the polarization line pattern has index +1/2 and the ...
Berry, M.V., Dennis, M.R., Lee, Jr, R.L.
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Matter Accretion Versus Semiclassical Bounce in Schwarzschild Interior
Universe, 2020 We discuss the properties of the previously constructed model of a Schwarzschild black hole interior where the singularity is replaced by a regular bounce, ultimately leading to a white hole.
Kirill Bronnikov +2 more
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Ways to achieve efficient non-local vortex beam generation
Nanophotonics, 2021 Based on the insights into the phenomenon of bound states in the continuum, a novel approach utilizing the momentum-space polarization morphologies of periodic structures to generate vortex beams (VBs) has been proposed. Such periodic structures modulate
Liu Wenzhe +3 more
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Quantum effects, soft singularities and the fate of the universe in a braneworld cosmology [PDF]
, 2005 We examine a class of braneworld models in which the expanding universe encounters a "quiescent" future singularity. At a quiescent singularity, the energy density and pressure of the cosmic fluid as well as the Hubble parameter remain finite while all ...
Alam U Sahni V +27 more
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Polarization Singularities and Intensity Degeneracies [PDF]
Frontiers in Physics, 2020 In optical testing, the well-known peak valley detection ambiguity exhibited by degenerate interference intensity patterns is due to phase. The interplay between phase and polarization is evident in coherence theory. So the theme of intensity degeneracy arising due to polarization is taken up in this article for discussion.
Ruchi, Paramasivam Senthilkumaran
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Toroidal polarization vortices in tightly focused beams with singularity
Компьютерная оптика, 2020 In this paper, we numerically investigated tight focusing of cylindrical vector beams of the sec-ond order using Richards-Wolf formulae. It was shown that intensity rings where the Poynting vector was equal to zero appeared not only in the focal plane ...
S.S. Stafeev, V.V. Kotlyar
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