https://doi.org/10.1140/epjs/s11734-025-01543-w
Regular Article
High harmonic generation by dual laser fields interacting with relativistic plasmas
1
School of Electronic Information and Electrical Engineering, Changsha University, 410003, Changsha, China
2
Department of Physics, National University of Defense Technology, 410073, Changsha, China
Received:
31
July
2024
Accepted:
21
February
2025
Published online:
5
March
2025
We present a robust and effective scheme of high harmonic generation (HHG) from relativistic plasmas driven by dual laser fields. The theoretical analysis and particle-in-cell simulation results reveal that quasi-circularly polarized (CP) harmonics can be acquired due to the joint action of the P-polarized pump pulse and the CP seed pulse. In addition, the helicity of generated harmonics and the corresponding HHG efficiency can be effectively tuned through adjusting the handedness of seed pulse and the incidence angle of pump pulse, respectively. This finding may be beneficial to future applications requiring brilliant CP light pulses.
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Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
