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 …

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 …

Detection of degenerate Stokes index states

G Arora, S Deepa, SN Khan, P Senthilkumaran - Scientific Reports, 2020 - nature.com
Stokes phase is the phase difference between orthogonal component states in the
decomposition of any polarization state. Phase singularities in the Stokes phase distribution …

Generation of V-point polarization singularity lattices

Ruchi, SK Pal, P Senthilkumaran - Optics Express, 2017 - opg.optica.org
V-points normally do not occur in generic light fields as compared to C-points and L-lines. In
structured optical fields, simultaneous existence of C-points, V-points and L-lines can be …

Non-interferometric technique to realize vector beams embedded with polarization singularities

P Kumar, SK Pal, NK Nishchal, P Senthilkumaran - JOSA A, 2020 - opg.optica.org
In this paper, we present a simple and flexible non-interferometric method to generate
various polarization singularity lattice fields. The proposed method is based on a double …

Designer vector beams maintaining a robust intensity profile on propagation through turbulence

P Lochab, P Senthilkumaran, K Khare - Physical Review A, 2018 - APS
We report experiments on propagation of scalar and vector optical beams through random
phase screens mimicking turbulence and show that the intensity profile of the beam …

Full Poincaré beam with all the Stokes vortices

G Arora, Ruchi, P Senthilkumaran - Optics Letters, 2019 - opg.optica.org
In this Letter, we present a recipe for the generation of full Poincaré beams that contain all
Stokes vortices (SVs), namely ϕ 12, ϕ 23, and ϕ 31 vortices. Superposition of two scalar …

Statistical properties of partially coherent polarization singular vector beams

S Joshi, SN Khan, P Senthilkumaran, B Kanseri - Physical Review A, 2021 - APS
We investigate the statistical properties of partially coherent polarization singular beams
embedded with a V-point polarization singularity. An analytical formula for the cross-spectral …

OAM mode-excited surface plasmon resonance for refractive index sensing based on a photonic quasi-crystal fiber

E Liu, B Yan, H Zhou, Y Liu, G Liu, J Liu - JOSA B, 2021 - opg.optica.org
In this paper, a novel, to the best of our knowledge, surface plasmon resonance (SPR) fiber
biosensor is theoretically proposed to detect the surrounding refractive index based on a …

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 …