  We present a theoretical study of atomic laser-assisted photoionization
emission (LAPE) beyond the dipole approximation. By considering the
non-relativistic non-dipole strong-field approximation (non-dipole
Gordon-Volkov wave function), we analyze the different contributions to the
photoelectron spectrum (PES), which can be written in terms of intra- and
intercycle factors. We find that not only does our non-dipole approach exhibit
asymmetric emission in the direction of light propagation, but also allows
emission in dipole-forbidden directions. The former feature can be rooted both
in intra- and intercycle interference processes, whilst the latter stems from a
dependence of the sideband energy on the emission angle with respect to the
propagation direction. Our theoretical scheme, presented here for He atoms in
the 1s quantum state, is general enough to be applied to other atomic species
and field configurations.
