Results 51 to 60 of about 3,654 (163)
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
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Modeling for Partially Spatially Coherent Vortex Beams
IEEE Photonics Journal, 2017 We propose a method for modeling a wide class of partially spatially coherent vortex beams. It is shown that any member of such beams can be represented as an incoherent superposition of fully coherent vortex models weighted by a non-negative weighting ...
Zhangrong Mei
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Recent advances on optical vortex generation
Nanophotonics, 2018 This article reviews recent progress leading to the generation of optical vortex beams. After introducing the basics of optical vortex beams and their promising applications, we summarized different approaches for optical vortex generation by discrete ...
Wang Xuewen +5 more
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Vortex Beam Encoded All-Optical Logic Gates Based on Nano-Ring Plasmonic Antennas
Nanomaterials, 2019 Vortex beam encoded all-optical logic gates are suggested to be very important in future information processing. However, within current logic devices, only a few are encoded by using vortex beams and, in these devices, some space optical elements with ...
Houquan Liu +5 more
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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
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Correcting vortex splitting in higher order vortex beams
Optics Express, 2014 We demonstrate a general method for the first order compensation of singularity splitting in a vortex beam at a single plane. By superimposing multiple forked holograms on the SLM used to generate the vortex beam, we are able to compensate vortex splitting and generate beams with desired phase singularities of order ℓ = 0, 1, 2, and 3 in one plane.
Richard, Neo +5 more
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Optical clearing and shielding with fan-shaped vortex beams
APL Photonics, 2020 We propose and demonstrate a new method for creation of fan-shaped optical vortex beams by rational phase modulation and assembly based on a well-known conical vortex phase.
Haiping Wang +8 more
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Analyzing Vortex Light Beam Scattering Characteristics from a Random Rough Surface
Photonics, 2023 The propagation and scattering of vortex light beams in complex media have significant implications in the fields of laser imaging, optical manipulation, and communication. This paper investigates the scattering characteristics of vortex light beams from
Xiaoxiao Zhang +3 more
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Integrated Compact Optical Vortex Beam Emitters [PDF]
Science, 2012 A Twist of Light The angular momentum of photons can be used to encode and transmit information. Cai et al. (p. 363 ) developed a method for generating and emitting controllable orbital angular momentum states of light from a reconfigurable ...
Cai, Xinlun +8 more
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Numerical Analysis and Verification of Off-Axis Double Vortex Beams
PhotonicsVortex beams are unique in that they have annular spatial profiles and carry orbital angular momentum. This has led to their use in applications including laser processing, microparticle manipulation and signal transmission.
Jianqiang Ye +5 more
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