Fresnel and Fraunhofer diffraction of a Gaussian beam with several polarization singularities [PDF]
Компьютерная оптика, 2018 Alongside phase singularities (optical vortices), there may be light fields with polarization singularities (PS), i.e. isolated intensity nulls with radial, azimuthal, or radial-azimuthal polarization around them.
Alexey Kovalev, Victor Kotlyar
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Generation of vector beams with different polarization singularities based on metasurfaces
New Journal of Physics, 2022 In view of wide applications of vector beams and powerful light manipulation ability of metasurfaces, this paper studies the generation of two kinds of vector beams with different polarization singularities based on metasurfaces. One kind of vector beams
Danhua Liu +5 more
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Hilbert's Hotel in polarization singularities.
Optics Letters, 2017 We demonstrate theoretically how the creation of polarization singularities by the evolution of a fractional nonuniform polarization optical element involves the peculiar mathematics of countably infinite sets in the form of "Hilbert's Hotel." Two distinct topological processes can be observed, depending on the structure of the fractional optical ...
Yangyundou Wang, G. Gbur
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Dynamically tunable polarized mid-infrared light-emitting diodes from polarization singularities in a band-edge Weyl node [PDF]
Nature CommunicationsThe polarization states of light-emitting devices in conventional semiconductors are typically deterministically fixed by optical transition selection rules. However, in emerging Weyl semiconductors, band-crossing Weyl nodes introduce exotic polarization
Junrong Zhang +17 more
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Spatial Bunching of Same-Index Polarization Singularities in Two-Dimensional Random Vector Waves [PDF]
Physical Review X, 2018 Topological singularities are ubiquitous in many areas of physics. Polarization singularities are locations at which an aspect of the polarization ellipse of light becomes undetermined or degenerate.
L. De Angelis, F. Alpeggiani, L. Kuipers
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Topological radiation from vortex masers [PDF]
Nature CommunicationsVortex singularities in acoustic and electromagnetic fields are instrumental degrees of freedom in advanced wavefront-shaping schemes and robust high-throughput communications.
Haoye Qin +4 more
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Momentum analyticity of the holographic electric polarizability in 2 + 1 dimensions
Journal of High Energy Physics, 2017 The static electric polarization of a holographic field theory dual to the Einstein-Maxwell theory in the background of AdS 4 with a Reissner-Nordström (AdS-RN) black hole is investigated.
Lei Yin +3 more
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Corrigendum to “Phase Singularities to Polarization Singularities”
International Journal of Optics, 2021 Ruchi +2 more
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Observation of Polarization Singularities at the Nanoscale
Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, 2009 With a phase-sensitive near-field microscope we measure independently the two in-plane electric field components of light propagating through a 2D photonic crystal waveguide and the phase difference between them. Consequently, we are able to reconstruct the electric vector field distribution with subwavelength resolution.
M, Burresi +6 more
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Topological links and knots of speckled light mediated by coherence singularities [PDF]
Light: Science & ApplicationsLinks and knots are exotic topological structures that have garnered significant interest across multiple branches of natural sciences. Coherent links and knots, such as those constructed by phase or polarization singularities of coherent light, have ...
Zhuoyi Wang +4 more
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