Results 21 to 30 of about 43,576 (316)
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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Dividing the Topological Charge of a Laguerre–Gaussian Beam by 2 Using an Off-Axis Gaussian Beam
Micromachines, 2022 In optical computing machines, many parameters of light beams can be used as data carriers. If the data are carried by optical vortices, the information can be encoded by the vortex topological charge (TC).
Alexey A. Kovalev +3 more
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Longitudinal component of the Poynting vector of a tightly focused optical vortex with circular polarization [PDF]
Компьютерная оптика, 2018 We numerically investigated the focusing of optical vortices with the wavelength λ = 532 nm and right-hand circular polarization by using a diffractive lens with the numerical aperture NA = 0.95.
Sergey Stafeev, Anton Nalimov
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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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Singularities in Speckled Speckle [PDF]
, 2007 Speckle patterns produced by random optical fields with two (or more) widely different correlation lengths exhibit speckle spots that are themselves highly speckled.
Baranova +24 more
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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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Direct generation of optical vortices [PDF]
, 2014 A detailed scheme is established for the direct generation of optical vortices, signifying light endowed with orbital angular momentum. In contrast to common techniques based on the tailored conversion of the wave front in a conventional beam, this ...
B. E. A. Saleh +12 more
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Propagable Optical Vortices with Natural Noninteger Orbital Angular Momentum in Free Space
Advanced Photonics Research, 2023 Light beams with optical vortices can propagate in free space only with integer orbital angular momentum. Herein, this scientific consensus theoretically and experimentally is upheaved by proposing light beams carrying natural noninteger orbital angular ...
Xiaoyu Weng +7 more
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Frame dragging with optical vortices [PDF]
, 2011 General Relativistic calculations in the linear regime have been made for electromagnetic beams of radiation known as optical vortices. These exotic beams of light carry a physical quantity known as optical orbital angular momentum (OAM).
A Einstein +21 more
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IEEE Photonics Journal, 2018 We model the effect of the off-axis distance of edge dislocation on the transmission of mixed higher order optical vortex–edge dislocations in atmospheric turbulence.
Penghui Gao +4 more
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