Ionization of H(1s) by laser pulses: a close-coupling study

Here we present one of the first complete treatments of the ionization of a real atom by realistic laser pulses of arbitrary length and intensity. A large basis set of hydrogenic bound and discretized continuum states is employed in a close-coupling solution of the full time-dependent Schrödinger equation to give converged results for the resulting ionization probability for H(1s).