Results 21 to 30 of about 3,654 (163)
Nanomaterials, 2023 Currently, vortex beams are extensively utilized in the information transmission and storage of communication systems due to their additional degree of freedom. However, traditional terahertz metasurfaces only focus on the generation of narrowband vortex
Xueying Li +4 more
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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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Review on fractional vortex beam [PDF]
Nanophotonics, 2021 Abstract As an indispensable complement to an integer vortex beam, the fractional vortex beam has unique physical properties such as radially notched intensity distribution, complex phase structure consisting of alternating charge vortex chains, and more sophisticated orbital angular momentum modulation dimension.
Hao Zhang +5 more
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AIP Advances, 2023 Fractional vortex beams have attracted increasing attention due to their complex yet intriguing physical properties, such as radial notch intensity distribution and higher degrees of modulation in orbital angular momentum.
Xiang Xu +5 more
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Double and Square Bessel–Gaussian Beams
Micromachines, 2023 We obtain a transform that relates the standard Bessel–Gaussian (BG) beams with BG beams described by the Bessel function of a half-integer order and quadratic radial dependence in the argument.
Eugeny G. Abramochkin +2 more
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Experimental investigation in Airy transform of Gaussian beams with optical vortex
Results in Physics, 2021 The Airy transform was first introduced for a Gaussian beam, and the output beam is an Airy beam. When the Gaussian beam is extended to the Gaussian beam with optical vortex, what kind of output beam will be achieved by executing the Airy transformation.
Yi-Qing Xu +5 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
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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
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IEEE Photonics Journal, 2018 We originally exploit the vortex beams with patterns of closed polygons [namely, polygonal vortex beams (PVBs)] generated by a quasi-frequency-degenerate (QFD) Yb:CALGO laser resonator with astigmatic transformation. The PVBs with peculiar patterns of triangular, square, and parallelogram shapes carrying large orbital angular momentums (OAMs) are ...
Yijie Shen +4 more
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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
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