Illustration from Scientific Research

Coherent interaction of the IR laser pulses within graphene and with the quasi-free photoelectrons after the photoemission process leads to the formation of Floquet (red) and Volkov (grey) sidebands, respectively. Quantum path interference between the Floquet and Volkov transitions has to be considered, as both states are probed at the same photoelectron energy and in-plane momentum.

DOI