  Based on the favourable properties of previously used one-dimensional (1D)
atomic model potentials, we introduce a novel 1D atomic model potential for the
1D simulation of the quantum dynamics of a single active electron atom driven
by a strong, linearly polarized near-infrared laser pulse. By comparing
numerical simulation results of typical strong-field physics scenarios in 1D
and 3D, we show that this novel 1D model potential gives single atom HHG
spectra with impressively increased accuracy for the most frequently used
driving laser pulse parameters.
