Results 61 to 70 of about 1,828,977 (180)

Research progress on generating perfect vortex beams based on metasurfaces

Opto-Electronic Science
This article reviews the latest advances in the generation and control of perfect vector beams using metasurfaces. In recent years, metasurfaces have garnered increasing interest due to their simple fabrication and easy integration. Perfect vortex beams (
Xiujuan Liu, Manna Gu, Ying Tian, Mingfeng Zheng, Bo Fang, Zhi Hong, Chee Leong Tan, Xufeng Jing   +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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Generation of vector beams with different polarization singularities based on metasurfaces

New Journal of Physics, 2022
In view of wide applications of vector beams and powerful light manipulation ability of metasurfaces, this paper studies the generation of two kinds of vector beams with different polarization singularities based on metasurfaces. One kind of vector beams
Danhua Liu, Changda Zhou, Peiyao Lu, Jilian Xu, Zhiyuan Yue, Shuyun Teng   +5 more
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The Vortex, Volume One

, 1975
This file unit contains the first volume of The Vortex, a student led publication established on the University of Central Arkansas campus in ...
The Vortex Magazine of Literature and Fine Arts; University of Central Arkansas Department of English
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The photon vortex beam in rotating medium

New Journal of Physics, 2020
In this paper, we demonstrate that there are vortex beam solutions for the photon in the rotating medium. By constructing the photon wave function with Riemann–Silberstein vector, we derive the dynamic equation of the photon in moving medium from the ...
Jianye Wei, Wei Jia, Xubiao Peng, Qing Zhao, Molin Ge   +4 more
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Efficient generation and amplification of intense vortex and vector laser pulses via strongly-coupled stimulated Brillouin scattering in plasmas

Communications Physics
The past decade has seen tremendous progress in the production and utilization of vortex and vector laser pulses. Although both are considered as structured light beams, the vortex lasers have helical phase fronts and phase singularities, while the ...
Yipeng Wu, Chaojie Zhang, Zan Nie, Mitchell Sinclair, Audrey Farrell, Kenneth A. Marsh, E. Paulo Alves, Frank Tsung, Warren B. Mori, Chan Joshi   +9 more
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Ultrashort vortex from a Gaussian pulse – An achromatic-interferometric approach

Scientific Reports, 2017
The more than a century old Sagnac interferometer is put to first of its kind use to generate an achromatic single-charge vortex equivalent to a Laguerre-Gaussian beam possessing orbital angular momentum (OAM).
Dinesh N. Naik, Nabil A. Saad, D. Narayana Rao, Nirmal K. Viswanathan   +3 more
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Polarization Evolution of a Vector Vortex Optical Field in a Strongly Nonlocal Nonlinear Medium

IEEE Photonics Journal, 2019
The evolution of a vector vortex optical field (VVOF) with a spiral phase and azimuthally-variant polarization distributions in the field cross-section in a strongly nonlocal nonlinear (SNN) medium is demonstrated.
Caixia Liu, Huiwen Zhu, Rui-Pin Chen, Chao-Qing Dai, Sailing He   +4 more
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Particle Scattering Induced Orbital Angular Momentum Spectrum Change of Vector Bessel–Gaussian Vortex Beam

Remote Sensing, 2022
In this paper, we obtain the intensity and phase distributions of the scattering and external fields of a vector Bessel–Gaussian vortex beam in the far-field region after being scattered by a particle.
Chenge Shi, Mingjian Cheng, Lixin Guo, Martin P. J. Lavery, Ping Wang, Songhua Liu, Renxian Li, Jiangting Li   +7 more
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Lock-in of the vortex-induced vibrations of a long tensioned beam in shear flow [PDF]

, 2011
The occurrence of lock-in, defined as the local synchronization between the vortex shedding frequency and the cross-flow structural vibration frequency, is investigated in the case of a tensioned beam of length to diameter ratio 200, free to move in both
Rémi Bourguet, George E. Karniadakis, Triantafyllou, Michael S., Karniadakis, George E., Bourguet, Rémi, Michael S. Triantafyllou   +5 more
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