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Engineering phase and polarization singularity sheets [PDF]
Nature Communications, 2021 Metasurfaces allow for vast possibilities of light control. Here, the authors demonstrate on-demand engineering and realization of a broad family of two-dimensional phase singularity sheets and transverse polarization singularity sheets, opening up new ...
Soon Wei Daniel Lim +4 more
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Polarization singularity anisotropy: determining monstardom [PDF]
Optics Letters, 2008 C points, that is isolated points of circular polarization in transverse fields of varying polarization, are classified morphologically into three distinct types, known as lemons, stars and monstars.
Berry +17 more
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Topological Charge of Light Fields with a Polarization Singularity
Photonics, 2022 We have studied diverse vector and hybrid light fields, including those with multiple polarization singularities, and have derived relationships for polarization singularity indices based on the familiar Berry formula, which is normally utilized to find ...
Victor V. Kotlyar +2 more
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Singularity transformation through single-pass phase modulation of light [PDF]
Scientific ReportsThe emergence of optical vortex phenomena has generated significant interest in optical technologies. By manipulating light parameters such as amplitude, phase, and polarization, new advances have been made in structured light techniques, which enable ...
Laxminarayan +3 more
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Topological polarization singularities in metaphotonics [PDF]
Nanophotonics, 2021 Polarization singularities of vectorial electromagnetic fields locate at the positions where properties of polarization ellipses are not defined. First observed for conical diffraction in 1830s, polarization singularities have been studied systematically
Liu Wenzhe +3 more
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Dielectric metasurfaces based on a phase singularity in the region of high reflectance [PDF]
NanophotonicsMetasurfaces, two-dimensional planar optical devices based on subwavelength-scale structures, have garnered significant attention for their potential to replace conventional optical components in various fields. These devices can manipulate the amplitude,
Jang Jaewon +5 more
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Exploiting hidden singularity on the surface of the Poincaré sphere [PDF]
Nature CommunicationsThe classical Pancharatnam-Berry phase, a variant of the geometric phase, arises purely from the modulation of the polarization state of a light beam. Due to its dependence on polarization changes, it cannot be effectively utilized for wavefront shaping ...
Jinxing Li +5 more
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Phase Singularities to Polarization Singularities [PDF]
International Journal of Optics, 2020 Polarization singularities are superpositions of orbital angular momentum (OAM) states in orthogonal circular polarization basis. The intrinsic OAM of light beams arises due to the helical wavefronts of phase singularities. In phase singularities, circulating phase gradients and, in polarization singularities, circulating ϕ12 Stokes phase gradients are
null Ruchi +2 more
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Компьютерная оптика, 2022 In this work, we study several different vector and hybrid light fields, including those with multiple polarization singularities. We derive polarization singularity indices by adopting a well-known M.V.
V.V. Kotlyar, A.A. Kovalev, V.D. Zaitsev
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Focusing of a vector beam with C-lines of polarization singularity
Компьютерная оптика, 2021 We discuss the sharp focusing of an initial hybrid vector light field of the n-th order that has n C-lines (lines along which the polarization is circular). Using a complex Stokes field, it is shown that the polarization singularity index of such a field
V.V. Kotlyar, S.S. Stafeev, A.G. Nalimov
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