Transient and time periodic self focusing of a laser beam in a plasma

Bharuthram, R.; Parashar, J.; Tripathi, V.K.
May 1999
Physics of Plasmas;May99, Vol. 6 Issue 5, p1611
Academic Journal
Develops a theoretical model for self focusing of a Gaussian laser beam with step function temporal profile in a collisionless plasma in the paraxial ray approximation. Expression for modified electron density in the paraxial region as a function of space and time; Solution for the wave equation to obtain an equation for the beam width parameter.


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