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Updated: Aug 19, 2026

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
Published on: July 2, 2012
Dynamics of self-trapped singular beams in an underdense plasma
V I Berezhiani1, S M Mahajan, Z Yoshida
1Graduate School of Frontier Sciences, The University of Tokyo, Hongo 7-3-1, Tokyo 113-0033, Japan.
Abstract:
Dynamics of an intense short laser pulse with a phase singularity, propagating in an underdense cold plasma, is investigated. Such a pulse can propagate as a vortex soliton in a self-created channel. It is shown that vortices with the topological charge m=1,2 (and a corresponding angular momentum) are unstable against symmetry-breaking perturbations; the breakup of the original vortex leads to the formation of stable spatial solitons that steadily fly away tangentially from the initial ring of vortex distribution.
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