Results 1 to 10 of about 5,007 (212)

Systematic mapping of altermagnetic magnons by resonant inelastic X-ray circular dichroism [PDF]

Nature Communications
Altermagnets, a unique class of magnetic materials that combines features of both ferromagnets and antiferromagnets, have garnered attention for their potential in spintronics and magnonics.
Nikolaos Biniskos, Manuel dos Santos Dias, Stefano Agrestini, David Sviták, Ke-Jin Zhou, Jiří Pospíšil, Petr Čermák   +6 more
doaj   +2 more sources

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

Results 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, Chenghao Ma, Miaomiao Tang, Yuee Luo, Xinzhong Li   +4 more
doaj   +1 more source

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

AIP 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]

Компьютерная 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

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, Nikita N. Kazakov, Vladislav D. Zaitsev, Sergey D. Poletayev, Victor V. Kotlyar   +4 more
doaj   +1 more source

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

Photonics, 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, Khian-Hooi Chew, Yingqi Huang, Caixia Liu, Xiaobo Hu, Yuhua Li, Rui-Pin Chen   +6 more
doaj   +1 more source

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

Micromachines, 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, Victor V. Kotlyar, Anton G. Nalimov   +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

The 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, Anne Dutrey, Patrick M. Koch, Stephane Guilloteau, Hsi-Wei Yen, Emmanuel di Folco, Eric Pantin, Takayuki Muto, Akimasa Kataoka, Robert Brauer   +9 more
doaj   +1 more source

Numerical Analyses of the Polarization Dependent Cladding Mode Coupling in Localized Fiber Bragg Gratings

IEEE Access, 2021
The polarization dependence of cladding mode coupling in fiber Bragg grating (FBG) plays a significant role in the excitation of surface plasmon resonances (SPR) for sensing applications.
Fangcheng Shen, Tingting Zhang
doaj   +1 more source

Azimuthally and radially polarized orbital angular momentum modes in valley topological photonic crystal fiber

Nanophotonics, 2021
Artificially tailoring the polarization and phase of light offers new applications in optical communication, optical tweezers, and laser processing. Valley topological physics provides a novel paradigm for controlling electromagnetic waves and encoding ...
Zhang Zhishen, Lu Jiuyang, Liu Tao, Gan Jiulin, Heng Xiaobo, Wu Minbo, Li Feng, Yang Zhongmin   +7 more
doaj   +1 more source