Nonlinear interaction of amplitude-modulated gaussian laser beam with anharmonic magnetized and rippled CNTs: THz generation

S Kumar, S Vij, N Kant, V Thakur - Brazilian Journal of Physics, 2023 - Springer
We propose a theoretical analysis for the generation of efficient terahertz (THz) radiation by
using the nonlinear interaction of an amplitude-modulated Gaussian laser beam with a …

Sheath formation mechanism in collisional electronegative warm plasma with two-temperature non-extensive distributed electrons and ionization

R Dhawan, HK Malik - Journal of Applied Physics, 2023 - pubs.aip.org
The sheath formation mechanism is modeled in a four-component collisional
electronegative warm plasma considering the behavior of positive ions by fluid equations …

Exploring THz efficiency: frequency chirp dynamics in Sinh-Gaussian laser–plasma interaction

J Singh, S Rani, HK Midha, V Sharma, V Thakur - Journal of Optics, 2024 - Springer
In recent years, terahertz (THz) radiation has become an extremely useful instrument in a
variety of domains, including spectroscopy, imaging, and communication, due to its …

Hat-top beams for generating tunable THz radiations using a medium of conducting nanocylinders

HK Malik, T Punia, D Sharma - Electronics, 2021 - mdpi.com
There are a large number of studies for terahertz (THz) radiation generation, but tunable THz
sources are still a challenge since it is difficult to tune frequency, focus and intensity of the …

Self-focusing and defocusing phenomena of super-Gaussian laser beams in plasmas carrying density gradient

L Devi, HK Malik - Journal of Optics, 2023 - iopscience.iop.org
Considering nonlinearities due to relativistic mass variation and ponderomotive force driven
depression in the electron density, a model is developed for the self-focusing of a super …

[HTML][HTML] Novel concept of tailorable magnetic field and electron pressure distribution in a magnetic nozzle for effective space propulsion

L Malik - Propulsion and Power Research, 2023 - Elsevier
Magnetic nozzle appears to be a practical solution for prolonged space missions. For
efficient handling of the spaceship, an in-flight solution to customize the thrust from the …

THz radiation generation through graphite nanoparticles having two different shapes and orientations of basal planes

T Punia, D Sharma, HK Malik - IEEE Transactions on Plasma …, 2022 - ieeexplore.ieee.org
Graphite nanoparticles (NPs) in two distinct geometries, ie, cylindrical and spherical, having
two different configurations of their basal planes with respect to the electric field of the laser …

In-flight plume control and thrust tuning in magnetic nozzle using tapered-coils system under the effect of density gradient

L Malik - IEEE Transactions on Plasma Science, 2023 - ieeexplore.ieee.org
A three-thick tapered-coils system is developed and the role of spacing and relative size of
the coils along with their tapering in controlling the plume geometry through a magnetic …

Electron plasma wave excitation by two co-propagating super-Gaussian laser beams in collisional nanocluster Plasma

A Varma, SP Mishra, A Kumar, S Kumar… - Journal of Theoretical …, 2023 - oiccpress.com
In this theoretical study, we investigate the electron plasma wave excitation (EPW) by two
copropagating high power laser beams in collisional nanocluster plasma. The interaction of …

Analytical approach for the use of different gauges in bubble wakefield acceleration

HK Malik, S Kumar, V Dhaka… - Journal of Theoretical and …, 2021 - oiccpress.com
Laser and plasma interaction leads to several fascinating nonlinear phenomena, out of
which bubble wakefield excitation is one of the recent interests. This field is used for the …