Model for atomic dielectric response in strong, time-dependent laser fields

A nonlocal quantum mechanical model is explored for calculating the atomic response to a strong laser electric field. By replacing the Coulomb potential with a nonlocal potential in the Schrodinger equation, a 3+1D calculation of the time-dependent electric dipole moment is reformulated as a 0+1D integral equation that retains the 3D dynamics. The model is benchmarked against an established ionization theory and \textit{ab initio} simulation of the time-dependent Schrodinger equation. An extension to include multiple bound states, as well as 2 color THz generation predictions are also presented.