Ultrafast imaging of molecular chirality with photoelectron vortices


Motivated by advances in electron vortex states, which carry orbital angular momentum (OAM), we exploit conserved helicity inherent in photoelectrons carrying OAM from a chiral target to propose a new ultrafast chiral imaging technique, dubbed photoelectron vortex dichroism (PEVD). We theoretically demonstrate huge asymmetry in OAM-resolved photoelectron emission, sensitive to molecular chirality, for electrons ionized by strong linearly polarized fields.