Singular optics: optical vortices and polarization singularities

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Divergence of an orbital-angular-momentum-carrying beam upon propagation (2014, methodology): “The precise pweighting of this superposition is a complicated function of both∣ ∣ l and the value of beamwaistw0 chosen to perform the decomposition [13].”
Internal flows and energy circulation in light beams (2010, positive): “These instances demonstrate the suitability of internal flows for analysis of singular optical phenomena, and it is not striking that the fast development of ‘singular optics’ [2,5,13] in the past years supplies another powerful stimulus for the energy flow investigations.”
Optical skyrmions and other topological quasiparticles of light (2022, neutral): “Therefore, 2D guided electromagnetic modes, such as surface plasmon polaritons or other planar waveguides are obvious candidates for realisation of 2D topological structures.”
Spin-to-orbital conversion of the angular momentum of light and its classical and quantum applications (2011, neutral): “, [60–62]).”
Topological photonics (2018, background): “the rich dynamics of optical vortices in singular optics (Dennis et al., 2009; Gbur, 2016), the topology underlying knots”
Roadmap on structured light (2016, background): “Liquid crystal SLMs also tend to suffer from significant crosstalk, which limits the accuracy of the displayed phase pattern.”