Recoil effects on reflection from relativistic mirrors in laser plasmas

Relativistic mirrors can be realized with strongly nonlinear Langmuir waves excited by intense laser pulses in underdense plasma. On reflection from the relativistic mirror, the incident light affects the mirror motion. The corresponding recoil effects are investigated analytically and using particl...

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Bibliographic Details
Published in:Physics of plasmas 2020-03, Vol.27 (3)
Main Authors: Valenta, P., Esirkepov, T. Zh, Koga, J. K., Pirozhkov, A. S., Kando, M., Kawachi, T., Liu, Y.-K., Fang, P., Chen, P., Mu, J., Korn, G., Klimo, O., Bulanov, S. V.
Format: Article
Language:English
Subjects:
Electric fields
Electromagnetic radiation
Fluence
Incident light
Laser plasmas
Mathematical analysis
Particle in cell technique
Plasma physics
Recoil
Reflectance
Reflection
Relativistic effects
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Summary:Relativistic mirrors can be realized with strongly nonlinear Langmuir waves excited by intense laser pulses in underdense plasma. On reflection from the relativistic mirror, the incident light affects the mirror motion. The corresponding recoil effects are investigated analytically and using particle-in-cell simulations. It is found that if the fluence of the incident electromagnetic wave exceeds a certain threshold, the relativistic mirror undergoes a significant back reaction and splits into multiple electron layers. The reflection coefficient of the relativistic mirror and the factors of electric field amplification and frequency upshift of the electromagnetic wave are obtained.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.5142084