Uncovering the remarkable contribution of lasers peak intensity region in holography

L Malik, A Escarguel, M Kumar, A Tevatia… - Laser Physics …, 2021 - iopscience.iop.org
For the scheme of two colour lasers in interference and holography, we uncover the
remarkable contribution of the focusing region (spread) of the peak intensity of superposing …

Dark hollow lasers may be better candidates for holography

L Malik - Optics & Laser Technology, 2020 - Elsevier
Gaussian laser beams have been very successful in various fields including holography
where two lasers with frequency difference have been used, but good quality holograms …

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 …

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 …

[HTML][HTML] Relativistic self focusing and frequency shift of super-Gaussian laser beam in plasma

HK Malik, L Devi - Results in Physics, 2020 - Elsevier
Relativistic self focusing and frequency shift of laser beam having super-Gaussian profile in
space and Gaussian profile in time is studied in a plasma. The relativistic mass nonlinearity …

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 …

Energy efficient electron acceleration using optimized Sinh-Gaussian laser beam in vacuum

V Sharma, R Kaur, V Thakur - Journal of Optics, 2024 - Springer
Particle accelerators play a crucial role in modern scientific research, facilitating progress in
diverse areas such as fundamental physics and medical treatments. In this study, an intense …

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 …

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 …