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journal article·2020-02-01Open access

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

R. X. Bai, C. T. Zhou, T. W. Huang, L. B. Ju, S. Z. Wu, H. Zhang, M. Y. Yu, B. Qiao, S. C. Ruan, X. T. He

AIP Advances· Volume 10· Issue 2
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Source abstract

Abstract

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.
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Research context

OpenAlex topics: Laser-Plasma Interactions and Diagnostics · Laser-Matter Interactions and Applications · Advanced Fiber Laser Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

HEDPS, Center for Applied Physics and Technology and School of Physics, Peking University 1 , Beijing 100871, People’s Republic of China

Center for Advanced Material Diagnostic Technology, College of Engineering Physics, Shenzhen Technology University 2 , Shenzhen 518118, People’s Republic of China

Funding

National Key R&D Program of China · National ICF Committee of China · The Featured Innovation Project of Educational Commission of Guangdong Province of China · Natural Science Foundation of Top Talent of SZTU · Open Fund of the State Key Laboratory of High-Field Laser Physics at SIOM-CAS · National Natural Science Foundation of China

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