  Theoretical results are reported, concerning the reflection and transmission
of few-cycle laser pulses on a very thin conducting layer, which may represent
the surface current density of the massless charges of graphene. It is shown
that the pulse may undergo violent distortions, even at moderate intensities,
to that extent, that the scattered radiation contains rectangular trains, which
are approximate realizations of Rademacher functions in the optical or
terahertz regime.
