Results 1 to 10 of about 54,067 (294)

Azimuthal distributions in radiative decay of polarized $\tau$ lepton [PDF]

open access: yesJournal of Experimental and Theoretical Physics, 2015
Various distributions over the angles of the emitted photon, especially over the azimuthal angle, in the one-meson radiative decay of the polarized $\tau$ lepton, $\tau^-\to\pi^-\gamma\nu_{\tau}$, have been investigated.
Gakh, G. I.   +2 more
core   +2 more sources

Influence of initial phase of polarization on tight focusing of vector beam

open access: yesResults in Optics, 2021
Generally, the influence of initial phase of polarization distribution of incident vector beams always is ignored in its tight focusing, because it just induce the whole rotation of polarization distribution.
Hehe Li   +4 more
doaj   +1 more source

A tunable liquid crystal polarization converter based on hybrid alignment with a deeply rubbed polyimide surface

open access: yesAIP Advances, 2023
This work demonstrates a tunable liquid crystal polarization converter (LCPC) constructed using two conductive glass substrates that are treated with homogeneous alignment and azimuthal alignment, respectively.
Zuowei Zhou, Senhao Li, Miao Xu
doaj   +1 more source

Fresnel and Fraunhofer diffraction of a Gaussian beam with several polarization singularities [PDF]

open access: yesКомпьютерная оптика, 2018
Alongside phase singularities (optical vortices), there may be light fields with polarization singularities (PS), i.e. isolated intensity nulls with radial, azimuthal, or radial-azimuthal polarization around them.
Alexey Kovalev, Victor Kotlyar
doaj   +1 more source

Polarimetry with azimuthally polarized light [PDF]

open access: yesOptics Communications, 2018
Nonuniformly polarized light can be used for Mueller polarimetry of homogeneous linear samples. In this work, a set up based on using azimuthally polarized input light and a modified commercial light polarimeter is proposed and developed. With this set up, a Mueller submatrix of a sample can be obtained by measuring the Stokes parameters at only three ...
González de Sande, Juan Carlos   +2 more
openaire   +2 more sources

Independent control of polar and azimuthal anchoring [PDF]

open access: yesPhysical Review E, 2013
Monte Carlo simulation, experiment, and continuum theory are used to examine the anchoring exhibited by a nematic liquid crystal at a patterned substrate comprising a periodic array of rectangles that, respectively, promote vertical and planar alignment.
Anquetil-Deck, C.   +3 more
openaire   +3 more sources

Vector Beams with Only Transverse Intensity at Focus

open access: yesApplied 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
doaj   +1 more source

Effect of Twisting Phases on the Polarization Dynamics of a Vector Optical Field

open access: yesPhotonics, 2022
The effect of twisting phases on the polarization dynamics of a vector vortex beam with a spatially variant state of polarization (SoP) is investigated theoretically and experimentally.
Quanbin Liu   +6 more
doaj   +1 more source

Spin Hall Effect in Paraxial Vectorial Light Beams with an Infinite Number of Polarization Singularities

open access: yesMicromachines, 2023
Elements of micromachines can be driven by light, including structured light with phase and/or polarization singularities. We investigate here a paraxial vector Gaussian beam with an infinite number of polarization singularities residing evenly on a ...
Alexey A. Kovalev   +2 more
doaj   +1 more source

Polarization in the GG Tau Ring—Confronting Dust Self-scattering, Dust Mechanical and Magnetic Alignment, Spirals, and Dust Grain Drift

open access: yesThe Astrophysical Journal Letters, 2023
We report Atacama Large Millimeter/submillimeter Array (ALMA) polarization observations at 3 and 0.9 mm toward the GG Tau A system. In the ring, the percentage is relatively homogeneous at 3 mm, being 1.2%, while it exhibits a clear radial variation at 0.
Ya-Wen Tang   +9 more
doaj   +1 more source

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