Results 11 to 20 of about 4,520 (260)
Nanophotonics, 2013 Optical vortex beams, possessing spatial polarization or phase singularities, have intriguing properties such as the ability to yield super-resolved spots under focussing, and the ability to carry orbital angular momentum that can impart torque to ...
Ramachandran Siddharth, Kristensen Poul
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Spatiotemporal Optical Vortices [PDF]
Physical Review X, 2016 We present the first experimental evidence, supported by theory and simulation, of spatiotemporal optical vortices (STOVs). A STOV is an optical vortex with phase and energy circulation in a spatiotemporal plane.
N. Jhajj +5 more
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Existence of Optical Vortices [PDF]
SIAM Journal on Mathematical Analysis, 2014 17 ...
Yisong Yang, Ruifeng Zhang
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Optical Vortices shape Optical Tornados
Optics Express, 2023 We demonstrate that by seeding an accelerating ring-Airy beam with a finite number of off-axis optical vortices, it transforms into a Tornado wave (ToW) upon propagation. Using numerical simulations, we show that both the spiraling high-intensity lobes and the optical vortices exhibit angular acceleration and follow interwinding braid-like trajectories.
Apostolos Brimis +2 more
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Optical vortices in antiguides [PDF]
Optics Letters, 2013 We address the question of whether an optical vortex can be trapped in a dielectric structure with a core of a lower refractive index than the cladding--namely an antiguide. Extensive numerical simulations seem to indicate that this inverse trapping of a vortex is not possible, at least in straightforward implementations.
Marrucci, Lab, Smyth, NFc, Assanto, Gd
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2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, 2006 We theoretically and experimentally investigate the self-focusing of optical vortices in Kerr media. We observe collapse to a distinct self-similar profile, which becomes unstable to azimuthal perturbations. We analyze the azimuthal modulational instability for ring-shaped vortices and predict the number of azimuthal maxima solely as a function of ...
Luat T, Vuong +6 more
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The curious arithmetic of optical vortices [PDF]
Optics Letters, 2000 The superposition of noncoaxial light beams containing screw wave-front dislocations is shown to create light patterns with a richer vortex content than that given by the arithmetic of the topological charges of the individual beams. We report the experimental observation of this phenomenon.
Molina Terriza, Gabriel +2 more
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Optical vortices enabled by structural vortices
, 2023 The structural symmetry of solids plays an important role in defining their linear and nonlinear optical properties. The quest for versatile, cost-effective, large-scale, and defect-free approaches and materials platforms for tailoring structural and optical properties on demand has been underway for decades.
Liu, Yuanfeng +9 more
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Symmetry and Quantum Features in Optical Vortices [PDF]
Symmetry, 2021 Optical vortices are beams of laser light with screw symmetry in their wavefront. With a corresponding azimuthal dependence in optical phase, they convey orbital angular momentum, and their methods of production and applications have become one of the most rapidly accelerating areas in optical physics and technology.
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Geometric Progression of Optical Vortices
Photonics, 2022 We study coaxial superpositions of Gaussian optical vortices described by a geometric progression. The topological charge (TC) is obtained for all variants of such superpositions. The TC can be either integer or half-integer in the initial plane. However,
Victor Kotlyar +4 more
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