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 …

Circularly polarized states spawning from bound states in the continuum

W Liu, B Wang, Y Zhang, J Wang, M Zhao, F Guan… - Physical review …, 2019 - APS
Bound states in the continuum in periodic photonic systems like photonic crystal slabs are
proved to be accompanied by vortex polarization singularities on the photonic bands in 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 …

Observation of polarization vortices in momentum space

Y Zhang, A Chen, W Liu, CW Hsu, B Wang, F Guan… - Physical review …, 2018 - APS
The vortex, a fundamental topological excitation featuring the in-plane winding of a vector
field, is important in various areas such as fluid dynamics, liquid crystals, and …

Momentum-space polarization fields in two-dimensional photonic-crystal slabs: Physics and applications

WZ Liu, L Shi, CT Chan, J Zi - Chinese Physics B, 2022 - iopscience.iop.org
In addition to non-radiative guided modes, two-dimensional photonic-crystal slabs support
guided resonant ones which can radiate into free space. From the polarization states of …

Spatially engineered polarization states and optical vortices in uniaxial crystals

TA Fadeyeva, VG Shvedov, YV Izdebskaya… - Optics …, 2010 - opg.optica.org
We describe how the propagation of light through uniaxial crystals can be used as a
versatile tool towards the spatial engineering of polarization and phase, thereby providing …

Observation of polarization singularities at the nanoscale

M Burresi, RJP Engelen, A Opheij, D van Oosten… - Physical review …, 2009 - APS
With a phase-sensitive near-field microscope we measure independently the two in-plane
electric field components of light propagating through a 2D photonic crystal waveguide and …

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 …

Statistical, correlation, and topological approaches in diagnostics of the structure and physiological state of birefringent biological tissues

OV Angelsky, AG Ushenko… - … of Photonics for …, 2010 - api.taylorfrancis.com
OV Angelsky, AG Ushenko, Yu. A. Ushenko Chernivtsi National University, Correlation
Optics Department, 2 Kotsyubinskoho Str., Chernivtsi 58012, UkraineV. P. Pishak, AP …

Polarization singularities in superposition of vector beams

S Vyas, Y Kozawa, S Sato - Optics Express, 2013 - opg.optica.org
We present a systematic study of the superposition of two vector Laguerre-Gaussian (LG)
beams. Propagation depended field distribution obtained from the superposition of two …