Recently, with the rapid developments of ultra-strong ultra-short laser technologies, laser-driven high-energy particle beams (e.g., electrons, positrons and Gamma-photons) with large spin and orbital angular momenta, which have significant applications in many fields, have attracted broad interests. However, their generation and measurement are still great challenges. In this talk, we would like to introduce the related progresses of our group [1-5].

[1] Z. Li, et al. Ultrafast Spin Rotation of Relativistic Lepton Beams via Terahertz Wave in a Dielectric-Lined Waveguide. Phys. Rev. Lett. 134, 075001 (2025).
[2] Z. Lu, et al. Angular Momentum Resolved Inelastic Electron Scattering for Nuclear Giant Resonances. Phys. Rev. Lett. 134, 052501 (2025).
[3] T. Sun, et al. Generation of ultrabrilliant polarized attosecond electron bunch via dual-wake injection. Phys. Rev. Lett. 132, 054001 (2024).
[4] K. Xue, et al. Generation of high density high-polarization positrons via single-shot strong laser-foil interaction. Phys. Rev. Lett. 131, 175101 (2023). Editors' Suggestion.
[5] Z. Lu, et al. Manipulation of Giant Multipole Resonances via Vortex γ Photons. Phys. Rev. Lett. 131, 202502 (2023)

 

strong-field QED,nonlinear Compton scattering,orbital angular momentum,spin polarization,Nonlinear Breit-Wheeler prcoess