Abstract
In the present paper, self-focusing of Gaussian laser beam through collisional plasma is studied by moment theory approach. Nonlinear differential equation for beam width parameter of laser beam has been set up and solved numerically to study the variation of beam width parameter with normalized distance of propagation. Effect of absorption coefficient and plasma density on the beam width parameter has been studied. It is observed from the analysis that increasing the value of absorption coefficient brings about reduction in extent of self-focusing on account of decrease in energy of beam, which is equivalent to weakening of nonlinearity effect. On the other hand, increase in plasma density results in a sharp decrease in focusing length due to increase in nonlinear part of dielectric constant.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
