activity
20202026
most citedDynamic diffractive resonant radiation in a linearly chirped nonlinear waveguide array

4 citations · 10 across the 9 of their papers we have counts for

collaborators

10 papers

physics.optics2026

Static and breathing dynamics of optical bullets in nonlinear GRIN fibers

Sonali Maity, Tiyas Das, Anuj P. Lara +2

We explore the properties of spatiotemporal solitons within nonlinear graded-index (GRIN) optical fibers, specifically addressing their formation, stability, and breathing dynamics…

physics.optics2026

Robust bistable vortex light bullets in graded-index multimode fibers

Ashis Paul, Anuj P. Lara, Govind P. Agrawal +1

We explore theoretically the formation and evolution of spatiotemporal vortex bullets, pulses confined in both space and time while carrying orbital angular momentum, inside a grad…

physics.optics2026

Optical beam propagation inside a graded-index fiber with saturable nonlinearity

Tiyas Das, Anuj P. Lara, Samudra Roy +1

We study theoretically the spatial evolution of optical beams inside a graded-index fiber exhibiting saturable nonlinearity. Utilizing an approach based on the variational principl…

physics.optics2025

Bistable quartic soliton in saturable nonlinear media

Tiyas Das, Anuj Pratim Lara, Samudra Roy

This report presents a theoretical demonstration of a novel bistable quartic soliton (BQS) in saturable nonlinear media, specifically within a realistic dispersion-engineered ridge…

physics.optics2025★ 1 cited

A comprehensive study on beam dynamics inside symmetrically chirped waveguide array mimicking the graded index media

Anuj P. Lara, Samudra Roy

In this article, we explore the beam dynamics within symmetrically chirped nonlinear waveguide arrays, focusing on linear and quadratic chirping schemes. We propose a practical str…

physics.optics2023★ 4 cited

Radiation families emitted by a discrete soliton in parity-time-symmetric waveguide arrays

Anuj P. Lara, Ambaresh Sahoo, Samudra Roy

We investigate the dynamics of a spatial discrete soliton and the radiation families emitted by it inside a parity-time ()-symmetric waveguide array with alternate ga…

physics.optics2023

Beam propagation in an active nonlinear graded-index fiber

Anuj P. Lara, Samudra Roy, Govind P. Agrawal

A theoretical model is developed by exploiting the variational technique to investigate the evolution of an optical beam inside an optically pumped graded-index fiber amplifier. Th…

physics.optics2023

Spatial beam dynamics in graded-index multimode fibers under Raman amplification:a variational approach

Ashis Paul, Anuj P. Lara, Samudra Roy +1

We investigate the spatial beam dynamics inside a multimode graded-index fiber under Raman amplification by adopting a semi-analytical variational approach. The variational analysi…

physics.optics2022★ 1 cited

Collision dynamics of discrete soliton in uniform waveguide arrays

Anuj P. Lara, Samudra Roy

We investigate the collision dynamics of discrete soliton (DS) pair in a realistic semi-infinite nonlinear waveguide array (WA) in the context of \textit{diffractive resonant radia…

physics.optics2020★ 4 cited

Dynamic diffractive resonant radiation in a linearly chirped nonlinear waveguide array

Anuj P. Lara, Samudra Roy

We theoretically and numerically investigate the evolution of discrete soliton in a 1D linearly chirped nonlinear waveguide array (WA). The discrete soliton is self-accelerated ins…