• Naveen Gupta

Nonlinear interaction of ultra intense laser beams with collisional plasma having ramp shaped electron density has been investigated theoretically. Due to the non uniform heating of the carriers produced by the laser beam, the plasma responds nonlinearly to the laser beam. This results in copious nonlinear optical effects like self focusing, self trapping, self modulation of the spatial frequency of the laser beam etc. In the present investigation emphasis is put on investigation of self focusing of the laser beam. Variational theory based on Rayleigh Ritz optimization has been applied to find semi analytical solution of the wave equation for the pump beam. The effect of cavity imperfections of the laser system on irradiance profile of the laser beam has been incorporated through q-Gaussian distribution function for the amplitude structure over the wave fronts of the laser beam.

Nonlinear Interaction of Ultra Intense Laser Beams with Collisional Plasma with Ramped Electron Density

"Nonlinear Interaction of Ultra Intense Laser Beams with Collisional Plasma with Ramped Electron Density", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 1, page no.590-595, January 2019, Available :http://www.jetir.org/papers/JETIRDY06087.pdf

"Nonlinear Interaction of Ultra Intense Laser Beams with Collisional Plasma with Ramped Electron Density", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 1, page no. pp590-595, January 2019, Available at : http://www.jetir.org/papers/JETIRDY06087.pdf