Results 11 to 20 of about 34,816 (291)
Polygonal vortex beams in quasi-frequency-degenerate states [PDF]
IEEE Photonics Journal, 2018 We originally demonstrate 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
Fu, Xing +4 more
core +4 more sources
Nondiffracting beams for vortex tomography [PDF]
Optics Letters, 2005 We propose a reconstruction of vortex beams based on the implementation of quadratic transformations in the orbital angular momentum. The information is encoded in a superposition of Bessel-like nondiffracting beams.
Andrei B. Klimov +16 more
core +3 more sources
Optics Express, 2021 We report on a novel curvilinear optical vortex beam named twin curvilinear vortex beams (TCVBs) with intensity and phase distribution along a pair of two- or three-dimensional curves, both of which share the same shape and the same topological charge.
Zhuang Wang +8 more
openaire +2 more sources
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
openaire +2 more sources
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
openaire +3 more sources
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
doaj +1 more source
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
doaj +1 more source
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
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
Applied Sciences, 2020 In this paper, we review the generation of vortex beams carrying orbital angular momentum in the microwave domain. We firstly present the theory of Laguerre−Gaussian beams where it is demonstrated that they carry such type of momentum.
Kuang Zhang +3 more
doaj +1 more source