  In low energy atom-surface scattering, it is possible for the atom to be
reflected in a region of attractive potential with no classical turning point.
This phenomenon has come to be known as quantum reflection and it can reduce
the sticking probability of atoms to surfaces, as well be used for atom
trapping. We simulate the quantum reflection process in a one-dimensional model
with a slow-moving atom moving in a Morse potential in the presence of an
applied laser field. We show that in the case of laser-assisted quantum
reflection, the laser field imparts additional momentum and kinetic energy to
the atom. This results in a decreased distance of closest approach between the
atom and surface. Our results show that the distance of closest approach and
can be controlled through the timing and intensity of the laser pulse, which
may result in enhanced sticking probability and/or reduced quantum reflection
probability.
