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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
doaj +8 more sources
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.
Ruchi +2 more
doaj +6 more sources
Spin Hall Effect in the Paraxial Light Beams with Multiple Polarization Singularities [PDF]
Micromachines, 2023 Elements of micromachines can be driven by light, including structured light with phase and/or polarization singularities. We investigate a paraxial vectorial Gaussian beam with multiple polarization singularities residing on a circle.
Alexey A. Kovalev +2 more
doaj +3 more sources
Topologically protected optical polarization singularities in four-dimensional space [PDF]
Sci Adv, 2023 Optical singularities play a major role in modern optics and are frequently deployed in structured light, super-resolution microscopy, and holography.
Spaegele CM +5 more
semanticscholar +4 more sources
On-chip plasmonic spin-Hall nanograting for simultaneously detecting phase and polarization singularities [PDF]
Light Sci Appl, 2020 Phase and polarization singularities are important degrees of freedom for electromagnetic field manipulation. Detecting these singularities is essential for modern optics, but it is still a challenge, especially in integrated optical systems.
F. Feng +4 more
semanticscholar +5 more sources
Polarization Singularities and Intensity Degeneracies [PDF]
Frontiers in Physics, 2020 In optical testing, the well-known peak valley detection ambiguity exhibited by degenerate interference intensity patterns is due to phase. The interplay between phase and polarization is evident in coherence theory.
Ruchi, Paramasivam Senthilkumaran
doaj +3 more sources
Generation of polarization singularities with geometric metasurfaces [PDF]
Sci Rep, 2019 The polarization singularities are directly generated by using plasmonic metasurfaces with the geometric phase profiles designed to form the Poincaré beams.
Yuchao Zhang, Xiaodong Yang, Jie Gao
semanticscholar +5 more sources
Evolution of C-point singularities and polarization coverage of Poincaré–Bessel beam in self-healing process [PDF]
Scientific ReportsAs a vector version of scalar Bessel beams, Poincaré–Bessel beams (PBBs) have attracted a great deal of attention due to their non-diffracting and self-healing properties as well as the presence of polarization singularities.
Subith Kumar +4 more
doaj +3 more sources
Micromachines, 2023 Elements of micromachines can be driven by light, including structured light with phase and/or polarization singularities. We investigate here a paraxial vector Gaussian beam with an infinite number of polarization singularities residing evenly on a ...
Alexey A. Kovalev +2 more
doaj +2 more sources
Polarization singularities: Topological and dynamical aspects
Frontiers in Physics, 2023 The review describes general principles and characteristics of inhomogeneously polarized paraxial optical fields and, especially, the polarization singularities (PSs).
O. V. Angelsky +6 more
doaj +2 more sources