Results 31 to 40 of about 35,390 (284)
Spiral fractional vortex beams
Optics Express, 2023 A new type of spatially structured light field carrying orbital angular momentum (OAM) mode with any non-integer topological order, referred to as the spiral fractional vortex beam, is demonstrated using the spiral transformation. Such beams have a spiral intensity distribution and a phase discontinuity in the radial direction, which is completely ...
Lixun Wu +6 more
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Propagation and Focusing Properties of Vortex Beams Based on Light Ray Tracing
Frontiers in Physics, 2022 By using the ray-tracing method based on geometric optics, we studied the propagating and focusing characteristics of vortex beams with a top-hat intensity distribution.
Meng-Qiang Cai +4 more
doaj +1 more source
Divergence of optical vortex beams [PDF]
Applied Optics, 2015 4 pages, 4 ...
Reddy, Salla Gangi +5 more
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Propagation of Partially Coherent Flat-Topped Vortex Hollow Beams in Anisotropic Turbulent Plasma
International Journal of Optics, 2022 The propagation properties of partially coherent circular flat-topped (FT) vortex hollow/nonvortex beams are studied in anisotropic turbulent plasma. The analytical expression of the optical intensity of these beams is obtained by employing the extended ...
Abdu A. Alkelly +2 more
doaj +1 more source
Nonuniform currents and spins of relativistic electron vortices in a magnetic field [PDF]
, 2017 We present a relativistic description of electron vortex beams in a homogeneous magnetic field. Including spin from the beginning reveals that spin-polarized electron vortex beams have a complicated azimuthal current structure, containing small rings of ...
Götte, Jörg B. +2 more
core +3 more sources
Research on Blind Area Suppression Technology for Vortex Beam Detection [PDF]
Hangkong bingqiTo address the problem of far-target detection blind areas caused by the dark hollow regions in the propagation direction of vortex beams， a method based on the coherent synthesis of vortex superposition using a ring-beam array is proposed.
Peng Zhiyong, Tu Yan, Zhang Ninghua, Zhou Shuping, Zhao Zidan, Xie Guanghui
doaj +1 more source
Broadband Vortex Beam Modulating System Based on Electrically Controlled Liquid Crystal Devices
Photonics, 2023 Vortex beams with helical phase wavefronts have recently emerged as a research hotspot because of their widespread applications such as ultra-high dimensional information encoding, quantum entanglement, and data transmission due to their unique ...
Xinyi Zhou +5 more
doaj +1 more source
Vortex strength and beam propagation factor of fractional vortex beams
Optics Express, 2019 9 pages, 5 ...
Jisen Wen +4 more
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Generation and characteristics of an Airy vortex beam from the anomalous vortex beam
Results in Physics, 2022 Hybrid beams have evoked a long-running research upsurge due to its unique properties and extensive application. In this paper, we propose a novel method to generate a kind of hybrid Airy vortex beam (AiVB) with orbital angular momentum (OAM) by imposing a phase modulation on an anomalous vortex beam (AVB), which hybrid AiVB possesses dual ...
Qiang Zhang, Zhirong Liu, Xun Wang
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Far-field measurements of vortex beams interacting with nanoholes [PDF]
, 2015 We measure the far-field intensity of vortex beams going through nanoholes. The process is analyzed in terms of helicity and total angular momentum. It is seen that the total angular momentum is preserved in the process, and helicity is not.
Fernandez-Corbaton, Ivan +3 more
core +4 more sources