Autofocusing and self-healing of partially blocked circular Airy derivative beams

A Kumari, V Dev, V Pal - Optics & Laser Technology, 2024 - Elsevier
We numerically and experimentally study the autofocusing and self-healing of partially
blocked circular Airy derivative beams (CADBs). The CADB consists of multiple rings, and …

Self-healing of holographically generated moiré lattice wave fields

S Tang, C Shang, Z Liu, C Lu, Y Cai, Y Gao… - Chinese Optics …, 2023 - opg.optica.org
Self-healing in optics generally refers to the ability to reconstruct itself and restore the
original state after encountering obstacles in the propagation of the light field. In this …

Investigation of noise correlations in the phase-locked class-A VECSEL array

S Karuseichyk, V Pal, S Sahoo, G Beaudoin… - Optics …, 2023 - opg.optica.org
We theoretically and experimentally study the noise correlations in an array of lasers based
on a VECSEL (Vertical External Cavity Surface Emitting Laser) architecture. The array of two …

Autofocusing and self-healing properties of circular Mathieu beam carrying orbital angular momentum

D Xu, Z Lu, S Duan, X Zhang, W Lin, Y Yao… - Optics & Laser …, 2024 - Elsevier
Abrupt autofocusing is defined as a phenomenon that the peak light intensity of an optical
beam dramatically increases by several orders of magnitude while remaining low level near …

Probing topological charge of discrete vortices

V Dev, V Pal - Physical Review Applied, 2023 - APS
A discrete vortex, formed by a one-dimensional (1D) ring array of lasers, has high output
power as compared with a conventional continuous vortex, and therefore has attracted …

Generating high-energy densities by sidelobe suppression in the far-field of phase-locked lasers

V Dev, ANK Reddy, V Pal - JOSA B, 2022 - opg.optica.org
Laser beams with high-energy densities are desired for both fundamental research and
applied applications. We present a numerical study on the generation of high-energy …

Generating asymmetric aberration laser beams with controlled intensity distribution

S Singh, V Dev, V Pal - Journal of Optics, 2022 - iopscience.iop.org
We present generation of asymmetric aberration laser beams (aALBs) with controlled
intensity distribution, using a diffractive optical element (DOE) involving phase asymmetry …

High-power discrete vortex with phase locked lasers

V Dev, V Pal - 2022 International Conference Laser Optics …, 2022 - ieeexplore.ieee.org
We present the generation of high-power discrete vortices formed by phase locking one-
dimensional ring array of lasers in a degenerate cavity. We have observed that the …