Feasibility of producing highly polarized dense relativistic electron beams via intense laser–plasma interaction

Establish whether intense laser–plasma interactions (LPI) can generate highly spin‑polarized, dense relativistic electron beams.

Background

Radiative spin polarization in strong monochromatic laser waves typically yields low net polarization due to the oscillatory field symmetry, and alternative multi‑pulse or polarization‑tailored schemes face significant experimental challenges. Against this backdrop, a central question is whether intense LPI alone can yield highly polarized and dense relativistic electron beams, which would expand the capabilities of PW‑class laser facilities.