Interaction features of two ultra-intense laser pulses self-trapped in underdense plasmas

The interaction of two parallel relativistic laser beams in underdense plasmas is investigated by considering the evolution of their wave envelopes. The energy transfer between the two lasers is given by an expression based on the evolution of the total laser power in a regime without beam mixing. I...

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Bibliographic Details
Published in:AIP advances 2020-02, Vol.10 (2), p.025313-025313-6
Main Authors: Bai, R. X., Zhou, C. T., Huang, T. W., Ju, L. B., Wu, S. Z., Zhang, H., Yu, M. Y., Qiao, B., Ruan, S. C., He, X. T.
Format: Article
Language:English
Subjects:
Computer simulation
Energy transfer
Evolution
Laser beams
Lasers
Nonlinear equations
Particle in cell technique
Plasmas (physics)
Relativism
Relativistic effects
Schrodinger equation
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Summary:The interaction of two parallel relativistic laser beams in underdense plasmas is investigated by considering the evolution of their wave envelopes. The energy transfer between the two lasers is given by an expression based on the evolution of the total laser power in a regime without beam mixing. It is shown that how the energy is transferred depends nonlinearly on the initial phase difference of the lasers, and the result of the interaction depends on the laser intensity, spot radius, and their separation distance. The results are verified by direct numerical solution of the relativistic nonlinear Schrödinger equations for the laser envelopes as well as particle-in-cell simulation. The study and results should be helpful for understanding the energy transfer behavior of multiple co-propagating laser beams in underdense plasmas.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.5131098