Results 41 to 50 of about 71,495 (286)
Creation of two vortex-entangled beams in a vortex beam collision with a plane wave
, 2012 Physics of photons and electrons carrying orbital angular momentum (OAM) is an exciting field of research in quantum optics and electron microscopy.
Ivanov, I. P.
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Vortex beam array generated by a volume compound fork grating in lithium niobite
Results in Physics, 2021 Here, we report a generation of vortex beam array based on a micro volume compound fork grating fabricated by a femtosecond laser direct writing technique in lithium niobite crystal.
Yu Zhuang +5 more
doaj +1 more source
Single- and double-vortex vector solitons in self-focusing nonlinear media
, 2004 We study two-component spatial optical solitons carrying an angular momentum and propagating in a self-focusing saturable nonlinear medium. When one of the components is small, such vector solitons can be viewed as a self-trapped vortex beam that guides ...
Kivshar, Yuri S., Salgueiro, Jose R.
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Vortex preserving statistical optical beams
Optics Express, 2020 We establish a general form of the cross-spectral density of statistical sources that generate vortex preserving partially coherent beams on propagation through any linear ABCD optical system. We illustrate our results by introducing a class of partially coherent vortex beams with a closed form cross-spectral density at the source and demonstrating the
Zhiheng Xu +5 more
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Vortex nucleation and evolution in parametric wave mixing [PDF]
, 1999 We predict a variety of new phenomena, that includes the spontaneous nucleation of multiple vortex twins, vortex rotation and drift, vortex-antivortex interaction and annihilation, and formation of quasi-aligned patterns of single-charge vortices.
Molina Terriza, Gabriel +1 more
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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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Periodic shedding of vortex dipoles from a moving penetrable obstacle in a Bose-Einstein condensate
, 2015 We investigate vortex shedding from a moving penetrable obstacle in a highly oblate Bose-Einstein condensate. The penetrable obstacle is formed by a repulsive Gaussian laser beam that has the potential barrier height lower than the chemical potential of ...
Kwon, Woo Jin +2 more
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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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Effect of interactions on vortices in a nonequilibrium polariton condensate [PDF]
, 2010 We demonstrate the creation of vortices in a macroscopically occupied polariton state formed in a semiconductor microcavity. A weak external laser beam carrying orbital angular momentum (OAM) is used to imprint a vortex on the condensate arising from the
D. M. Whittaker +12 more
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Vortex lattices in a stirred Bose-Einstein condensate
, 2000 We stir with a focused laser beam a Bose-Einstein condensate of $^{87}$Rb atoms confined in a magnetic trap. We observe the formation of a single vortex for a stirring frequency exceeding a critical value. At larger rotation frequencies we produce states
Donnelly R. J. +11 more
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