Self-focusing of low order LG laser beam in Gaussian plasma

Abstract

Laguerre Gaussian (LG) laser beam propagations is presented to investigate the self-focusing in collision-less Gaussian plasma. This is by deriving the equations supporting self-focusing in plasma mediums by using WKB approximation. Additionally, a range of values of laser-plasma parameters which would fulfil these equations is considered. For the scenario of Gaussian and collision-less plasma, the study is contrasted. By utilizing a low order Laguerre Gaussian laser beam is more exciting as compare to using a Gaussian laser because it incorporates the propagation specific characters of Laguerre Gaussian Laser Beam. The observations are appeared in term of early self-focusing with LG laser beam. The investigation is expected to unfold the new and more effective scenario for self-focusing in plasma.

Resonant second-harmonic generation of self-focused oblique incident laser beam in plasma

“…Using ( 2), ( 5), ( 9), (10), and (11) in equation ( 8) and equating the coefficients of r 2 = 0, we obtain the expression for the beam width parameter as…”

“…They observed stronger self-focusing when the laser propagates through a semiconductor of germanium. Ghotra and Singh [11] analyzed the self-focusing of a Laguerre-Gaussian laser beam propagating through plasma. They obtained the expression using WKG approximation, and stronger self-focusing was reported.…”

Self-focusing/defocusing of skew-cosh-Gaussian laser beam for collisional plasma

“…These techniques have attracted the attention of many research scholars. In contrast, some of the studies have been conducted on the self-focusing of quadruple Gaussian [26], q-Gaussian [27][28][29][30], Laguerre Gaussian [31,32], Bessel-Gaussian [33], skew-chG [34,35], and Airy-Gaussian [36].…”