Abstract: “We report on a novel curvilinear optical vortex beam named twin curvilinear vortex beams (TCVBs) with intensity and phase distribution along a pair of two- or three-dimensional curves, both of which share the same shape and the same topological charge. The TCVBs also possess the character of perfect optical vortex, namely having a size independent of topological charge. We theoretically demonstrate that a TCVB rather than a single-curve vortex beam can be created by the Fourier transform of a cylindrically polarized beam. The behavior of TCVBs generated through our method is investigated by simulation and experiment, including interference experiments for identifying the vortex property of the TCVBs. The TCVBs may find applications in optical tweezers, such as trapping low refractive index particles in the dark region between two curves and driving them moving along the curvilinear trajectory.”
Open Access
Publication: Optics Express
Issue/Year: Optics Express, Volume 29; Number 9; Pages 14112; 2021
Authors: Sebastian Cremaschini Sebastian Cremaschini Dipartimento di Fisica e Astronomia “G. Galilei”, Università di Padova, Via Marzolo 8, 35131 Padova, Italy More by Sebastian Cremaschini Orcidhttps://orcid.org/0000-0002-6416-5782 , Alberto Cattelan, Davide Ferraro, Daniele Filippi, Filippo Marinello, Alessio Meggiolaro, Matteo Pierno, Cinzia Sada, Annamaria Zaltron*, Paolo Umari*, and Giampaolo Mistura
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