Optical vortices 30 years on: OAM manipulation from topological charge to multiple singularities

Y Shen, X Wang, Z **e, C Min, X Fu, Q Liu… - Light: Science & …, 2019 - nature.com
Thirty years ago, Coullet et al. proposed that a special optical field exists in laser cavities
bearing some analogy with the superfluid vortex. Since then, optical vortices have been …

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 …

[LIBRO][B] Orbital angular momentum states of light: propagation through atmospheric turbulence

K Khare, P Lochab, P Senthilkumaran - 2024 - iopscience.iop.org
This book provides an in-depth introduction to modelling of long-range propagation of orbital
angular momentum (OAM) modes as well as more general structured light beams through …

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 …

Characterizing vortex beams from a spatial light modulator with collinear phase-shifting holography

JM Andersen, SN Alperin, AA Voitiv, WG Holtzmann… - Applied Optics, 2019 - opg.optica.org
We demonstrate collinear phase-shifting holography for measuring complex optical modes
of twisted light beams with orbital angular momentum (OAM) generated by passing a laser …

Probing higher orbital angular momentum of Laguerre-Gaussian beams via diffraction through a translated single slit

JPC Narag, N Hermosa - Physical Review Applied, 2019 - APS
Laguerre-Gaussian (LG) beams and their orbital angular momentum (OAM) have found a
plethora of applications—from quantum information to gravitational-wave detection. In this …

Speckle in polarization structured light

B Kumar, P Lochab, E Baidya Kayal… - Journal of Modern …, 2022 - Taylor & Francis
We show that the far-field speckle patterns observed on the transmission of polarization
structured light beams through a random diffuser screen have distinct spatial textures, which …

Diffraction of V-point singularities through triangular apertures

BSB Ram, A Sharma, P Senthilkumaran - Optics Express, 2017 - opg.optica.org
In this paper we present experimental studies on diffraction of V-point singularities through
equilateral and isosceles right triangular apertures. When V-point index, also called …

Robust laser beam engineering using polarization and angular momentum diversity

P Lochab, P Senthilkumaran, K Khare - Optics express, 2017 - opg.optica.org
We describe a laser beam engineered to carry l= 0 and l= 1 orbital angular momentum
(OAM) states in orthogonal polarizations. It is observed that on collinear transmission …