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 …

Dynamics of topological polarization singularity in momentum space

Y Zeng, G Hu, K Liu, Z Tang, CW Qiu - Physical Review Letters, 2021 - APS
The polarization singularity in momentum space has recently been discovered as a new
class of topological signatures of Bloch modes in photonic crystal slabs concerning the far …

Polarization singularities: topological and dynamical aspects

OV Angelsky, II Mokhun, AY Bekshaev… - Frontiers in …, 2023 - frontiersin.org
The review describes general principles and characteristics of inhomogeneously polarized
paraxial optical fields and, especially, the polarization singularities (PSs). Main parameters …

[HTML][HTML] Polarization singularities: Progress, fundamental physics, and prospects

Q Wang, CH Tu, YN Li, HT Wang - Apl Photonics, 2021 - pubs.aip.org
Polarization singularities, describing the points where the state of polarization is
indeterminate, reveal the polarization topology in vectorial optical fields, which include two …

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 …

Point singularity array with metasurfaces

SWD Lim, JS Park, D Kazakov, CM Spägele… - Nature …, 2023 - nature.com
Phase singularities are loci of darkness surrounded by monochromatic light in a scalar field,
with applications in optical trap**, super-resolution imaging, and structured light-matter …

Sharp focusing of a light field with polarization and phase singularities of an arbitrary order

VV Kotlyar, SS Stafeev, AA Kovalev - Computer optics, 2019 - mathnet.ru
VV Kotlyar, SS Stafeev, AA Kovalev, “Sharp focusing of a light field with polarization and
phase singularities of an arbitrary order”, Computer Optics, 43:3 (2019), 337–346 Computer …

Observing vortex polarization singularities at optical band degeneracies

A Chen, W Liu, Y Zhang, B Wang, X Liu, L Shi, L Lu… - Physical Review B, 2019 - APS
In the momentum space of two-dimensional (2D) periodic photonic systems, the polarization
states of radiating Bloch modes on a single band can form vortex polarization singularities …

Coherence-induced polarization effects in vector vortex beams

S Joshi, SN Khan, Manisha, P Senthilkumaran… - Optics Letters, 2020 - opg.optica.org
We demonstrate theoretically and experimentally coherence-induced polarization changes
in higher-order vector vortex beams (VVBs) with polarization singularity. The prominent …

Lattice of C points at intensity nulls

SK Pal, P Senthilkumaran - Optics Letters, 2018 - opg.optica.org
The dependence of fringe contrast on the state of polarization (SOP) can be altered when
more than two beams interfere, and it is possible to achieve high contrast fringes. We use a …