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Research progress on generating perfect vortex beams based on metasurfaces

open access: yesOpto-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   +7 more
doaj   +1 more source

Interaction between anomalous vortex beams in nonlocal media

open access: yesResults in Physics, 2017
In this paper, the interactional behaviors of anomalous vortex beams in highly nonlocal media are investigated. An analytical expression describing the interaction is given, and some numerical simulations are carried out to illustrate the interactional ...
Zhen-Jun Yang   +5 more
doaj   +1 more source

Direct fiber vector eigenmode multiplexing transmission seeded by integrated optical vortex emitters [PDF]

open access: yes, 2017
Spatial modes have received substantial attention over the last decades and are used in optical communication applications. In fiber-optic communications, the employed linearly polarized modes and phase vortex modes carrying orbital angular momentum can ...
Cai, Xin-Lun   +11 more
core   +1 more source

Vortex Beams for Atomic Resolution Dichroism [PDF]

open access: yesMicroscopy 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
openaire   +3 more sources

Controlled Generation and Manipulation of Vortex Dipoles in a Bose-Einstein Condensate

open access: yesPhysical Review X, 2011
We propose methods to generate and manipulate vortex dipoles in an atomic Bose-Einstein condensate using Gaussian beams of red- or blue-detuned laser. Vortex dipoles with controlled velocities are shown to be created and launched by a red-detuned beam ...
Tomohiko Aioi   +3 more
doaj   +1 more source

Peculiar rotation of electron vortex beams [PDF]

open access: yesUltramicroscopy, 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

Modeling for Partially Spatially Coherent Vortex Beams

open access: yesIEEE 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
doaj   +1 more source

Extension of Friedel's law to Vortex Beam Diffraction

open access: yes, 2016
Friedel's law states that the modulus of the Fourier transform of real functions is centrosymmetric, while the phase is antisymmetric. As a consequence of this, elastic scattering of plane wave photons or electrons within the first-order Born ...
Guzzinati, Giulio   +2 more
core   +1 more source

Recent advances on optical vortex generation

open access: yesNanophotonics, 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
doaj   +1 more source

Vortex Beam Encoded All-Optical Logic Gates Based on Nano-Ring Plasmonic Antennas

open access: yesNanomaterials, 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
doaj   +1 more source

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