8 papers · 1 filter
Statistics of Non-Rayleigh Speckles Generated from Nonlinear Media
Deependra Singh Gaur, Akanksha Gautam, Rakesh Kumar Singh +1
We analytically derive an expression for a speckle field's intensity probability density function (PDF) in a nonlinear medium. The analytically driven results are in good agreement…
Space-time non-separable dynamics of ultrashort vortex pulse with power exponential spectrum
Shakti Singh, Akhilesh Kumar Mishra
Ultrashort optical pulses with orbital angular momentum (OAM) owing to their applications in classical as well as quantum domains attract a lot of research attention. The evolution…
Evolutions of ring Airy vortex beam and ring Pearcey vortex beam in turbulent atmosphere and a comparative analysis of their channel efficiencies and OAM spectra
Shakti Singh, Sanjay Kumar Mishra, Akhilesh Kumar Mishra
An optical vortex beam propagating through turbulent atmosphere encounters distortions in the wavefront that results in modal scattering. Abruptly autofocussing (AAF) beams with or…
Reflection and Transmission of Airy Pulse from Controllable Periodic Temporal Boundary
Deependra Singh Gaur, Akhilesh Kumar Mishra
We numerically investigate the interaction between two Airy pulses propagating at different wavelengths. The periodically varying peak intensity of the soliton that emerges from st…
Effect of Electron-Phonon Interactions on Three-Level QD-based Spaser: Linear and Quadratic Potentials
Ankit Purohit, Vishvendra Singh Poonia, Akhilesh Kumar Mishra
In this article, a spaser (surface plasmon amplification by stimulated emission of radiation) system consisting of a metal nanoparticle surrounded by a large number of quantum dots…
Dynamics of chirped Airy pulse in a dispersive medium with higher-order nonlinearity
Ankit Purohit, Deependra Singh Gaur, Akhilesh Kumar Mishra
Chirp can control the dynamics of the Airy pulse, making it an essential factor in pulse manipulation. Finite energy chirped Airy pulse (FECAP) has potential applications in underw…