73 citations · 277 across the 17 of their papers we have counts for
18 papers
Time-delayed feedback turns Arrhenius escape logarithmic
Roy Podgaetsky, Vishwajeet Kumar, Arnab Pal +1
Thermal escape is governed by the Arrhenius law, where the mean escape time scales exponentially with the barrier height. We show that the non-Markovianity induced by time-delayed…
Enhanced abrupt autofocusing and depth-of-focus of circular Airy derivative beams via controlled asymmetry
Anita Kumari, Vishwa Pal
We demonstrate simultaneous enhancement of abrupt autofocusing and depth-of-focus (DOF) in circular Airy derivative beams through controlled asymmetry. The controlled asymmetry ena…
Spatially multiplexed concentric discrete optical vortices: Complex topological structures and unconventional rotational dynamics
Aditya Narayana Jena, Vishwa Pal
Precise control over the rotational dynamics of structured lights has become a defining objective in contemporary photonics. It plays a central role in governing the functional dis…
Propagation of circular Airy derivative beams in complex media
Anita Kumari, Vasu Dev, Vishwa Pal
Controlling light propagation through complex media plays a significant role in a wide range of applications ranging from astronomical observations to microscopy. Although, several…
Autofocusing and self-healing of partially blocked circular Airy derivative beams
Anita Kumari, Vasu Dev, Vishwa Pal
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 part…
Probing topological charge of discrete vortices
Vasu Dev, Vishwa Pal
Discrete vortex, formed by a one-dimensional (1D) ring array of lasers, contains high output power as compared to a conventional continuous vortex, therefore, has attracted conside…