Strong self-focusing for laser interaction with DT fusion target

Kamboj, Oriza; Thakur, Vishal; Ghotra, Harjit Singh; Kant, Niti

doi:10.1063/1.5120957

Cited by 5 publications

(1 citation statement)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The intricate interplay between laser and plasma gives rise to a host of nonlinear phenomena, including self-focusing of propagating beams [7][8][9][10][11][12], filamentation [13], self-phase modulation [14], finite pulse effect [15], second harmonic generation [16], as well as the emergence of parametric instabilities [17] such as stimulated Brillouin scattering, stimulated Raman scattering (SRS) [18][19][20] and two-plasmon decay [21]. During the propagation of a laser beam through plasma, a portion of its energy is reflected due to the presence of various parametric instabilities, which assume critical significance in the context of ICF.…”

Section: Introductionmentioning

confidence: 99%

Stimulated Raman scattering by circularly polarized quadruple Gaussian laser beam and co-propagating electron beam in plasma

Kamboj,

Teotia,

Kant

2023

Laser Phys.

Self Cite

View full text Add to dashboard Cite

This study investigates the interplay between a co-propagating relativistic electron beam and a quadruple Gaussian laser beam in plasma, focusing on the suppression of stimulated Raman scattering (SRS) growth. The presence of the laser beam induces the excitation of a pair of plasma waves and side-scattered electromagnetic waves. As the side-scattered wave and pump wave couple together, they exert a ponderomotive force on the electron beam and plasma electrons, resulting in an enhancement of the plasma wave amplitude. Nonlinear coupling between the density perturbation in the plasma, induced by the plasma wave, and the pump wave leads to the excitation of a nonlinear current responsible for the growth of the side-scattered electromagnetic wave associated with SRS. Furthermore, the growth rate of SRS is shown to be highly sensitive to the phase matching between the relativistic electron beam and the plasma wave. In cases of phase mismatch, the growth rate experiences a significant reduction. Additionally, the effectiveness of the electron beam in driving the stimulated Raman process is greatly affected by the energy spread of the electron beam. A substantial reduction in effectiveness is observed due to this energy spread.

show abstract

Section: Introductionmentioning

confidence: 99%

Stimulated Raman scattering by circularly polarized quadruple Gaussian laser beam and co-propagating electron beam in plasma

Kamboj,

Teotia,

Kant

2023

Laser Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

Relativistic self-focusing of Laguerre–Gaussian laser beam in density-rippled cold quantum plasma

Sinha,

Zare,

Kant

et al. 2025

Chinese Journal of Physics

View full text Add to dashboard Cite

Electron plasma wave excitation by a q-Gaussian laser beam and subsequent electron acceleration

2020

View full text Add to dashboard Cite

In this paper, we theoretically study the propagation dynamics of a q-Gaussian laser beam in a plasma by considering the relativistic and ponderomotive nonlinearities. The q-Gaussian laser beam exhibits unique characteristics while interacting with the plasma. The q-Gaussian laser beam redistributes the plasma density in a different way, which affects the laser self-focusing. A comparative study of the self-focusing for Gaussian and q-Gaussian laser beams is reported. The results obtained from numerical analysis reveal a stronger self-focusing of the q-Gaussian laser beam in plasmas, which is desirable to excite a large amplitude plasma wave for electron acceleration by extending the interaction length. We then extended this study to investigate the electron plasma wave excitation by the q-Gaussian laser beam. The electron plasma wave is driven more efficiently by the q-Gaussian laser beam. Our results show that the electron plasma wave field intensity enhances more than twofold for the q-Gaussian laser beam in comparison with the case of a Gaussian laser beam. The electron plasma wave excited by a q-Gaussian beam can accelerate the plasma electrons to higher energies. Numerical results are presented for the established set of laser and plasma parameters.

show abstract

Strong self-focusing for laser interaction with DT fusion target

Cited by 5 publications

References 14 publications

Stimulated Raman scattering by circularly polarized quadruple Gaussian laser beam and co-propagating electron beam in plasma

Stimulated Raman scattering by circularly polarized quadruple Gaussian laser beam and co-propagating electron beam in plasma

Relativistic self-focusing of Laguerre–Gaussian laser beam in density-rippled cold quantum plasma

Electron plasma wave excitation by a q-Gaussian laser beam and subsequent electron acceleration

Contact Info

Product

Resources

About