Relativistic Self-Focusing of Hermite-cosh-Gaussian Laser Beam in Magnetoplasma with Exponential Plasma Density Ramp

Niti Kant,Shivani Vij,Sudarshan Kumar Chakravarti,Juleshwar Prasad Kushwaha,Vishal Thakur

Fig. 1 Comparison between effects of exponential and tangential plasma density ramps on the dependence of beam width parameter ($f$) on normalized propagation distance ($\xi$) for various values of (a) $m=0$, (b) $m=1$, and (c) $m=2$. Rest of the parameters are considered as $α {}E_0^2=0.1, \omega_{P0}/\omega=0.75, \omega_c/\omega=0.8, b=0.9, \omega{}r_0/c=470$, and $d$=0.05.