Results 41 to 50 of about 1,828,977 (180)
Vector spherical quasi-Gaussian vortex beams [PDF]
Physical Review E, 2014 Model equations for describing and efficiently computing the radiation profiles of tightly spherically-focused higher-order electromagnetic beams of vortex nature are derived stemming from a vectorial analysis with the complex-source-point method.
openaire +3 more sources
Phase-change metasurface for switchable vector vortex beam generation [PDF]
, 2021 Metasurfaces have attracted increasing attention due to their unprecedented capabilities of molding optical fields with exceedingly low losses. Despite significant achievements, most existing metasurfaces are passive and lack dynamic modulation post ...
Jiang, Jing +5 more
core +1 more source
A highly adaptive three dimensional hybrid vortex method for inviscid flows and helically symmetric vortex equilibria [PDF]
, 2012 This thesis is concerned with three-dimensional vortex dynamics, in particular the modelling of vortex structures in an inviscid context. We are motivated by the open problem of regularity of the inviscid equations, i.e.
Lucas, Daniel
core +2 more sources
APL Photonics, 2019 Large topological charge optical vortex beams carrying orbital angular momentum have potential applications on optical trapping, optical communication with high capacity, quantum information processing.
Dimeng Chen +5 more
doaj +1 more source
Purity of Vector Vortex Beams through a Birefringent Amplifier [PDF]
Physical Review Applied, 2018 Creating high-quality vector vortex (VV) beams is possible with a myriad of techniques at low power, and while a few studies have produced such beams at high-power, none have considered the impact of amplification on the vector purity. Here we employ novel tools to study the amplification of VV beams, and in particular the purity of such modes.
Sroor, Hend +4 more
openaire +2 more sources
Results in Physics, 2022 Based on the Richards–Wolf vectorial diffraction theory, we investigate the tight-focusing properties of the chirp modulation linearly polarized circular Airy Gaussian vortex beams (C-LPCAiGVB) through high NA objective lens.
Xueying Ouyang
doaj +1 more source
Achromatic vector vortex beams from a glass cone [PDF]
Nature Communications, 2016 AbstractThe reflection of light is governed by the laws first described by Augustin-Jean Fresnel: on internal reflection, light acquires a phase shift, which depends on its polarization direction with respect to the plane of incidence. For a conical reflector, the cylindrical symmetry is echoed in an angular variation of this phase shift, allowing us ...
Radwell, N. +3 more
openaire +5 more sources
Studies of novel beam shapes and applications to optical manipulation [PDF]
, 2011 Electronic redacted version excludes material for which permission has not been granted by the rights holderIn this thesis an investigation into novel beams and optical manipulation is presented.
Morris, Jill E.
core +2 more sources
IEEE Photonics Journal, 2019 Singular beams with spatially variant field distributions have various fantastic applications. However, one of the significant challenges that hinder the wide application of singular beams is how to effectively identify the topological charge and the ...
Yanliang He +10 more
doaj +1 more source
Intake Ground Vortex Aerodynamics [PDF]
, 2008 When an aircraft is operating in static or near static conditions during taxiing or take-o a vortex can form between the ground and the intake. With engine diameters increasing, intakes are moving non-dimensionally closer to the ground and as a ...
Murphy, John
core +5 more sources