Correction of intense laser-plasma interactions by QED vacuum polarization in collision of laser beams
Wen-Bo Chen(陈文博)1,† and Zhi-Gang Bu(步志刚)2
1 Department of Physics, Shanghai University, Shanghai 200444, China; 2 State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Abstract The influence of vacuum polarization effects on the interactions of multiple ultra-intense lasers with plasmas is discussed. The nonlinear paraxial monochromatic model of the interactions has been improved by considering the Heisenberg-Euler Lagrangian density of two laser processes. Comparing the corrections of vacuum polarization effects in the collision of laser beams with one generated by a single intense laser, we find that the former has a higher order of magnitude correction. The laser collision also produces variations in the propagation direction and polarization direction of the lasers propagating in the plasma. In addition, the strong-field quantum electrodynamic (QED) effects can be enhanced by increasing the laser intensity or frequency difference, or by adjusting the incident angles of the two laser beams.
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11805117) and the Shanghai Leading Academic Discipline Project (Grant No. S30105).
Wen-Bo Chen(陈文博) and Zhi-Gang Bu(步志刚) Correction of intense laser-plasma interactions by QED vacuum polarization in collision of laser beams 2023 Chin. Phys. B 32 025204
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