  We extend the semiclassical two-step model for strong-field ionization that
describes quantum interference and accounts for the Coulomb potential beyond
the semiclassical perturbation theory to the hydrogen molecule. In the simplest
case of the molecule oriented along the polarization direction of a linearly
polarized laser field, we predict significant deviations of the two-dimensional
photoelectron momentum distributions and the energy spectra from the case of
atomic hydrogen. Specifically, for the hydrogen molecule the electron energy
spectrum falls off slower with increasing energy, and the holographic
interference fringes are more pronounced than for the hydrogen atom at the same
parameters of the laser pulse.
