Nonlinear Dynamics of Intense Laser Beam in Unmagnetized Plasma and its Influence on Second Harmonic Generation

Walia, Keshav

doi:10.1007/s10894-022-00335-7

Cited by 4 publications

(1 citation statement)

References 48 publications

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“…-[1, 2]. Several researchers have been investigating the interaction of intense lasers with plasmas due to its applicability to distinct applications, such as inertial confinement fusion, particle acceleration and relativistic nonlinear optics [3][4][5][6][7][8][9][10][11][12][13][14][15]. Success can be achieved in these applications on the basis of deeper laser beam transition through plasmas.…”

Section: Introductionmentioning

confidence: 99%

The influence of a self-focused laser beam on the stimulated Raman scattering process in collisional plasma

Walia,

Singh

2023

Commun. Theor. Phys.

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The influence of a self-focused beam on the stimulated Raman scattering (SRS) process in collisional plasma is explored. Here, collisional nonlinearity arises as a result of non-uniform heating, thereby causing carrier redistribution. The plasma density profile gets modified in a perpendicular direction to the main beam axis. This modified plasma density profile greatly affects the pump wave, electron plasma wave (EPW) and back-scattered wave. The well-known paraxial theory and Wentzel–Kramers–Brillouin approximation are used to derive second-order ordinary differential equations for the beam waists of the pump wave, EPW and the scattered wave. Further to this, the well-known fourth-order Runge–Kutta method is used to carry out numerical simulations of these equations. SRS back-reflectivity is found to increase due to the focusing of several waves involved in the process.

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