Results 21 to 30 of about 2,764,686 (330)
Vortex beam: generation and detection of orbital angular momentum [Invited]
Chinese Optics Letters (COL), 2022 Recent advances in the research of vortex beams, structured beams carrying orbital angular momentum (OAM), have revolutionized the applications of light beams, such as advanced optical manipulations, high-capacity optical communications, and super ...
Yi-Hua Bai +3 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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Frontiers in Physics, 2023 This study employs the power spectrum inversion method to generate the phase screens of atmospheric turbulence over the sea, the theoretical model of the vortex beam array emitted by a focusing system through anisotropic non-Kolmogorov maritime ...
Hong Yu +5 more
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Free-space creation of a perfect vortex beam with fractional topological charge.
Optics Express, 2023 Perfect vortex beams can only propagate stably with integer topological charges. Thus, creating perfect fractional vortex beams capable of stable propagation in free space, as perfect integer vortex beams, is crucial.
Guan-Xue Wang +6 more
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Second-Harmonic Generation of the Vortex Beams with Integer and Fractional Topological Charges
Photonics, 2023 The single-pass second-harmonic generation (SHG) of a vortex beam under low fundamental wave depletion is systematically studied. Vortex modes at 1064 nm with integer topological charges from ±1 to ±9 and fractional ones at ±0.75 are generated by ...
Shirui Zhang +5 more
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Vortex beam as a positioning tool
Optics Express, 2022 Remote positioning by precise measurements of lateral displacements of laser beams at large distances is inevitably disturbed by the influence of atmospheric turbulences. Here we propose the use of optical vortices, which exhibit lower transversal variations at an experimentally validated range of 100 meters.
Agnieszka Popiołek-Masajada +7 more
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Nondiffracting beams for vortex tomography [PDF]
Optics Letters, 2010 3 pages. 2 eps figures.
Rehacek, J. +5 more
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Polarization-controllable perfect vortex beam by a dielectric metasurface.
Optics Express, 2021 A perfect vortex beam has been attracting tremendous attention due to the fact that its ring radius is independent of the topological charge. Taking advantage of the superposition principle of phase in Fourier space, we proposed to generate perfect ...
Jianfeng Xie +3 more
semanticscholar +1 more source
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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Optics Express, 2021 Vortex beams carrying orbital angular momentum (OAM), which feature helical wavefronts, have been regarded as an alternative degree of freedom for free-space optical (FSO) communication systems.
Long Zhu +4 more
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