27 citations · 138 across the 16 of their papers we have counts for
17 papers
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…
A Comparative Study of Coherent and Incoherent Drives in Four-Level Quantum Dot-Based Spaser
Ankit Purohit, Akhilesh Kumar Mishra
In this article, we theoretically investigate a spaser (surface plasmon amplification by stimulated emission of radiation), which consists of a spherical silver nanoparticle surrou…
Eigenfrequency splitting with EPs order tunability in a coupled triple cavity system
Priyanka Chaudhary, Akhilesh Kumar Mishra
Degeneracies of non-Hermitian Hamiltonian i.e., exceptional points (EPs) of parity-time (PT)-symmetric systems have received considerable research attention due to their various po…
Ring Pearcey vortex beam dynamics through atmospheric turbulence
Shakti Singh, Sanjay Kumar Mishra, Akhilesh Kumar Mishra
The subject area of free space optical communication with optical beam carrying orbital angular momentum has attracted a great deal of research attention since last two decades. Ef…
Spatio-temporal Evolution Dynamics of Ultrashort Laguerre-Gauss Vortices in a Dispersive and Nonlinear Medium
Shakti Singh, AKhilesh Kumar Mishra
The additional degree of freedom as introduced by the orbital angular momentum (OAM) of light has revolutionized the various technological applications. Optical pulses with OAM hav…
Soliton Shedding from Airy Pulses in a Highly Dispersive and Nonlinear Medium
Deependra Singh Gaur, Ankit Purohit, Akhilesh Kumar Mishra
We present a numerical investigation of the propagation dynamics of a truncated Airy pulse in a highly dispersive and nonlinear medium by employing the split-step Fourier transform…
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…
Ultrafast nonlinear pulse propagation dynamics in metal-dielectric periodic photonic architectures
Jitendra Nath Acharyya, Akhilesh Kumar Mishra, D. Narayana Rao +2
One-dimensional (1D) metal-dielectric (MD) periodic structures take advantage of large refractive index contrast between metal and dielectrics to invoke extremely high nonlinear ul…
Carrier Dynamics in a Tunneling Injection Quantum Dot Semiconductor Optical Amplifier
I. Khanonkin, M. Lorke, S. Michael +4
The process of tunneling injection is known to improve the dynamical characteristics of quantum well and quantum dot lasers; in the latter, it also improves the temperature perform…
Ramsey fringes in a room temperature quantum dot semiconductor optical amplifier
Igor Khanonkin, Akhilesh K. Mishra, Ouri Karni +6
The ability to induce, observe and control quantum coherent interactions in room temperature, electrically driven optoelectronic devices is of outmost significance for advancing qu…
Impact of Free Carriers on Modulational Instability in Silicon-on-insulator Nanowaveguides
Deepa Chaturvedi, Ajit Kumar
We have numerically studied the effect of free-carrier-induced loss and dispersion on the modulational instability (MI) gain at low input powers in silicon-on-insulator (SOI) nanow…
Coherent control in room-temperature quantum dot semiconductor optical amplifiers using shaped pulses
Ouri Karni, Akhilesh Kumar Mishra, Gadi Eisenstein +2
We demonstrate the ability to control quantum coherent Rabi-oscillations in a room-temperature quantum dot semiconductor optical amplifier (SOA) by shaping the light pulses that tr…
Nonlinear pulse propagation in InAs/InP quantum-dot optical amplifiers: Rabi-oscillations in the presence of non-resonant nonlinearities
Ouri Karni, Akilesh Kumar Mishra, Gad Eisenstein +1
We study the interplay between coherent light-matter interactions and non-resonant pulse propagation effects when ultra-short pulses propagate in room-temperature quantum-dot (QD)…