High topological charge lasing in quasicrystals [PDF]
Nature CommunicationsPhotonic modes exhibiting a polarization winding akin to a vortex possess an integer topological charge. Lasing with topological charge 1 or 2 can be realized in periodic lattices of up to six-fold rotational symmetry—higher order charges require ...
Kristian Arjas +4 more
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The Bloch point 3D topological charge induced by the magnetostatic interaction [PDF]
Scientific Reports, 2021 A hedgehog or Bloch point is a point-like 3D magnetization configuration in a ferromagnet. Regardless of widely spread treatment of a Bloch point as a topological defect, its 3D topological charge has never been calculated. Here, applying the concepts of
F. Tejo +3 more
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Topological charge-entropy scaling in kagome Chern magnet TbMn6Sn6. [PDF]
Nat Commun, 2022 In ordinary materials, electrons conduct both electricity and heat, where their charge-entropy relations observe the Mott formula and the Wiedemann-Franz law.
Xu X +11 more
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Tailoring the Topological Charge of a Superposition of Identical Parallel Laguerre–Gaussian Beams [PDF]
Micromachines, 2022 In optical computing machines, data can be transmitted by optical vortices, and the information can be encoded by their topological charges. Thus, some optical mechanisms are needed for performing simple arithmetic operations with the topological charges.
Victor V. Kotlyar +3 more
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Optical vortices 30 years on: OAM manipulation from topological charge to multiple singularities. [PDF]
Light Sci Appl, 2019 Thirty years ago, Coullet et al. proposed that a special optical field exists in laser cavities bearing some analogy with the superfluid vortex. Since then, optical vortices have been widely studied, inspired by the hydrodynamics sharing similar ...
Shen Y +7 more
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Sound vortex diffraction via topological charge in phase gradient metagratings. [PDF]
Sci Adv, 2020 Artificial topological charge designed by azimuthal metagratings can be used to control sound vortex diffraction. Wave fields with orbital angular momentum (OAM) have been widely investigated in metasurfaces.
Fu Y +6 more
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Dipolar skyrmions and antiskyrmions of arbitrary topological charge at room temperature. [PDF]
Nat PhysMagnetic skyrmions are localized, stable topological magnetic textures that can move and interact with each other like ordinary particles when an external stimulus is applied.
Hassan M +11 more
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Generation of terahertz vector beam bearing tailored topological charge
APL Photonics, 2023 Optical vector beams have great potential in many applications, for example optical tweezers, information transmission and processing, laser surface structuring, particle acceleration, and vortex dichroism spectroscopy. However, the reported vector beams
Sen Mou +6 more
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Ergodic sampling of the topological charge using the density of states [PDF]
European Physical Journal C: Particles and Fields, 2021 In lattice calculations, the approach to the continuum limit is hindered by the severe freezing of the topological charge, which prevents ergodic sampling in configuration space.
Guido Cossu +4 more
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Vortex beam generation with variable topological charge based on a spiral slit
Nanophotonics, 2019 We propose a vortex beam generator based on a nanometer spiral slit and explore the propagation rule of the topological charge. Compared to the common methods of generation of a vortex beam with a fixed topological charge, the optical vortex generated by
Wang Han +6 more
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