Results 11 to 20 of about 184,725 (118)
Propagation-invariant vortex Airy beam whose singular point follows its main lobe [PDF]
, 2021 We propose and demonstrate a novel vortex Airy beam which is a superposition of an Airy beam and its laterally sheared beam with a $\pi/2$ phase shift. This new-type of vortex Airy beam exhibits stable propagation dynamics, wherein its singular point closely follows its main lobe, unlike conventional vortex Airy beams. Notably, the orbital angular mode
arxiv +1 more source
Entangled Optical Vortex Links [PDF]
Physical Review Letters, 2011 Optical vortices are lines of phase singularity which percolate through all optical fields. We report the entanglement of linked optical vortex loops in the light produced by spontaneous parametric down-conversion. As measured by using a Bell inequality, this entanglement between topological features extends over macroscopic and finite volumes.
Jacquiline Romero +7 more
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Singular Optics: Optical Vortex Streets
Optics and Photonics News, 2002 Peer ...
Molina Terriza, Gabriel +2 more
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Nonlinear optical vortex coronagraph
Optics Letters, 2020 A nonlinear optical vortex coronagraph (n-OVC) based on sum-frequency generation (SFG) in a periodically poled lithium niobate (PPLN) crystal is presented. We demonstrate an n-OVC by mixing the image of an on-axis point source ( λ s = 1.6 µ m ) inside the PPLN crystal with a pump beam (
Einstom Engay, Peter John Rodrigo
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Inversion of a guided optical vortex
Journal of the European Optical Society-Rapid Publications, 2006 We demonstrate, both theoretically and experimentally, the inversion of the topological charge of a vortex that propagates through an optical fiber. In our experiment, we couple the vortex to a two-mode fiber and we control the charge inversion by deformation of the optical fiber.
Vázquez Carpentier, Alicia +4 more
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Vortex-vortex control in exciton-polariton condensates [PDF]
Phys. Rev. B 95, 235301 (2017), 2017 Vortices are widely studied in fields ranging from nonlinear optics to magnetic systems and superconductors. A vortex carries a binary information corresponding to its topological charge, `plus' or `minus', that can be used for information storage and processing.
arxiv +1 more source
Topological analysis of paraxially scattered electron vortex beams [PDF]
Phys. Rev. A 87, 033834 (2013), 2014 We investigate topological aspects of sub-nm electron vortex beams upon elastic propagation through atomic scattering potentials. Two main aspects can be distinguished: (i) Significantly reduced delocalization compared to a similar non-vortex beam if the beam centers on an atomic column and (ii) site symmetry dependent splitting of higher-order vortex ...
arxiv +1 more source
Integrated optical vortex beam receivers [PDF]
Optics Express, 2016 A simple and ultra-compact integrated optical vortex beam receiver device is presented. The device is based on the coupling between the optical vortex modes and whispering gallery modes in a micro-ring resonator via embedded angular gratings, which provides the selective reception of optical vortex modes with definitive total angular momentum ...
Cicek, Kenan +11 more
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Optical Rogue Waves in Vortex Turbulence [PDF]
Physical Review Letters, 2016 5 pages, 7 ...
Gibson, Christopher J. +2 more
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Quantum Fluctuations of a Vortex in an Optical Lattice [PDF]
Physical Review Letters, 2003 Using a variational ansatz for the wave function of the Bose-Einstein condensate, we develop a quantum theory of vortices and quadrupole modes in a one-dimensional optical lattice. We study the coupling between the quadrupole modes and Kelvin modes, which turns out to be formally analogous to the theory of parametric processes in quantum optics.
Martikainen, J.-P., Stoof, H.T.C.
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