Relativistic slingshot: A source for single circularly polarized attosecond x-ray pulses

Jingwei Wang, Sergei V. Bulanov, Min Chen, Bifeng Lei, Yuxue Zhang, Rishat Zagidullin, Veronika Zorina, Wei Yu, Yuxin Leng, Ruxin Li, Matt Zepf, Sergey G. Rykovanov

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


We propose a mechanism to generate a single intense circularly polarized attosecond x-ray pulse from the interaction of a circularly polarized relativistic few-cycle laser pulse with an ultrathin foil at normal incidence. Analytical modeling and particle-in-cell simulation demonstrate that a huge charge-separation field can be produced when all the electrons are displaced from the target by the incident laser, resulting in a high-quality relativistic electron mirror that propagates against the tail of the laser pulse. The latter is efficiently reflected as well as compressed into an attosecond pulse that is also circularly polarized.

Original languageEnglish
Article number061201
JournalPhysical Review E
Issue number6
Publication statusPublished - 15 Dec 2020


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