Polarization variations of intense laser pulse in ionizing medium by a strong magnetic field
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In this work, we theoretically investigate the influence of an external strong magnetic field on the polarization of an intense laser pulse that propagates in a gaseous medium. The simulations indicate that the laser polarization dramatically depends on the direction of the strong magnetic field, and some striking symmetries of the energy transfer and the temporal profiles of the output laser pulse are observed. Microanalyses, such as electron velocity distributions, are made to explain these phenomena. The findings in this work show great potential in investigating the feedback of self-generated strong magnetic field to the intense laser-plasma interaction itself.
This work is supported by the National Natural Science Foundation of China (Grants No. 11274051, No. 11374040, No. 11475027, No. 11575027, No. 11674034, and No. 11775030), and the China Postdoctoral Science Foundation funded project (No. 2016M590066).