  The coherent charge transport through an illuminated graphene ribbon is
studied as function of electronic doping, frequency and strength of the
electromagnetic driving, for monochromatic circularly polarized light. We focus
on the DC current carried by 2D bulk carriers which is dominant (over edge
transport) for short and wide enough samples. Broad dips in conductance are
predicted for one-photon and multi-photon resonances between the valence and
conductance bands. The residual conductance can be associated with evanescent
states and related to dynamical gaps in the Floquet quasi-energy spectrum.
