Results 41 to 50 of about 2,764,686 (330)
, 2005 Optical vortices generically arise when optical beams are combined. Recently, we reported how several laser beams containing optical vortices could be combined to form optical vortex loops, links and knots embedded in a light beam (Leach et al 2004 ...
Dennis, MR +13 more
core +1 more source
A highly adaptive three dimensional hybrid vortex method for inviscid flows and helically symmetric vortex equilibria [PDF]
, 2012 This thesis is concerned with three-dimensional vortex dynamics, in particular the modelling of vortex structures in an inviscid context. We are motivated by the open problem of regularity of the inviscid equations, i.e.
Lucas, Daniel
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Physical Essence of Propagable Fractional‐Strength Optical Vortices in Free Space
Advanced Photonics Research, 2023 Fractional‐order vector vortex beams (VVBs) have recently been demonstrated as new carriers of fractional‐strength optical vortices. However, the inherent mechanism of the new vortex beams, formed by the combination of both unstable states, to propagate ...
Xiaoyu Weng +10 more
doaj +1 more source
Peculiar rotation of electron vortex beams [PDF]
Ultramicroscopy, 2015 Standard electron optics predicts Larmor image rotation in the magnetic lens field of a TEM. Introducing the possibility to produce electron vortex beams with quantized orbital angular momentum brought up the question of their rotational dynamics in the presence of a magnetic field. Recently, it has been shown that electron vortex beams can be prepared
Schachinger, T. +3 more
openaire +4 more sources
Studies of novel beam shapes and applications to optical manipulation [PDF]
, 2011 Electronic redacted version excludes material for which permission has not been granted by the rights holderIn this thesis an investigation into novel beams and optical manipulation is presented.
Morris, Jill E.
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, 2021 In this paper, we use two methods to research the propagation characteristics of a Hypergeometric-Gaussian (HyGG) vortex beam under oceanic turbulence. One is numerical calculation based on the Rytov approximation theory, where the theoretical detection ...
Xin-Guang Wang, Le Wang, Shengmei Zhao
semanticscholar +1 more source
Vortex Beams for Atomic Resolution Dichroism [PDF]
Microscopy and Microanalysis, 2011 Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.
Juan C, Idrobo, Stephen J, Pennycook
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Frontiers in Physics, 2023 Helicity and topological charge are two important characteristic parameters for vortex beam applications, including optical communications, optical manipulation and material processing, etc.
Shibing Lin +13 more
doaj +1 more source
Optical spin-dependent beam separation in cyclic group symmetric metasurface
Nanophotonics, 2020 Cross-polarization scattering of a circularly polarized beam from nano-rod introduces a geometric phase to the outgoing beam with opposite circular polarization.
Lee Yeon Ui +5 more
doaj +1 more source
Multichannel terahertz quasi-perfect vortex beams generation enabled by multifunctional metasurfaces
Nanophotonics, 2022 Vortex beams carrying orbital angular momentum (OAM) open a new perspective in various terahertz research. Multichannel and divergence controllable terahertz vortex beam generation holds the key to promoting the development of OAM related terahertz ...
Liu Wanying +7 more
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