Phase singularities to polarization singularities

Ruchi, P Senthilkumaran, SK Pal - International Journal of …, 2020 - Wiley Online Library
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 …

Generating optical vortex beams by momentum-space polarization vortices centred at bound states in the continuum

B Wang, W Liu, M Zhao, J Wang, Y Zhang, A Chen… - Nature …, 2020 - nature.com
Optical vortices, beams with spiral wavefronts and screw phase dislocations, have been
attracting increasing interest in various fields. Here, we theoretically propose and …

Chiral coupling of valley excitons and light through photonic spin–orbit interactions

P Chen, TW Lo, Y Fan, S Wang… - Advanced Optical …, 2020 - Wiley Online Library
Spintronics employs the spin of electrons to encode information. Akin to spintronics,
valleytronics exploits the valley as pseudospin‐carrying controllable binary information. 2D …

Dual coaxial longitudinal polarization vortex structures

Z Man, Z Xi, X Yuan, RE Burge, HP Urbach - Physical Review Letters, 2020 - APS
Carrying orbital angular momentum per photon, the optical vortex has elicited widespread
interest. Here, we demonstrate that dual coaxial longitudinal polarization vortices can …

Phase singularities to polarization singularities

P Senthilkumaran, SK Pal - International Journal of Optics, 2020 - search.proquest.com
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 …

Vortex generation in the spin-orbit interaction of a light beam propagating inside a uniaxial medium: origin and efficiency

X Ling, H Luo, F Guan, X Zhou, H Luo, L Zhou - Optics Express, 2020 - opg.optica.org
It has been known that an optical vortex with a topological charge±2 can be generated as a
circularly polarized (CP) light beam propagates in a bulk uniaxial crystal, but its physical …

Three-dimensional spin Hall effect of light in tight focusing

W Shu, C Lin, J Wu, S Chen, X Ling, X Zhou, H Luo… - Physical Review A, 2020 - APS
We theoretically propose the realization of a three-dimensional (3D) spin Hall effect (SHE) of
light by tightly focusing a linearly polarized light. Owing to the spin-orbital interaction in …

[HTML][HTML] Strong spin–orbit interaction of photonic skyrmions at the general optical interface

P Shi, L Du, X Yuan - Nanophotonics, 2020 - degruyter.com
Photonic skyrmions have applications in many areas, including the vectorial and chiral
optics, optical manipulation, deep-subwavelength imaging and nanometrology. Much effort …

Mapping the near-field spin angular momenta in the structured surface plasmon polariton field

CC Li, P Shi, LP Du, XC Yuan - Nanoscale, 2020 - pubs.rsc.org
Optical spin angular momenta in a confined electromagnetic field exhibit a remarkable
difference with their free space counterparts; in particular, the optical transverse spin that is …

Interplay between spin and orbital angular momenta in tightly focused higher‐order poincaré sphere beams

P Yu, Y Liu, Z Wang, Y Li, L Gong - Annalen Der Physik, 2020 - Wiley Online Library
Spin‐orbit interactions (SOIs) of light in tight focusing systems have gained much attention
due to the potential applications in optical trapping and microscopy. SOI effects strongly …