Abstract

We compute numerically the scattered light spectra accompanying MPI of a very simple atomic model. The model atom is similar to the hydrogen negative ion and has a single bound state and N + 1 continua (corresponding to angular momenta L = 0,…,N). The model is designed to focus attention on two parameters, a single representative dipole matrix element between the ground state and continuum states and a single dipole matrix element between continuum states. Each continua is modeled as a flat quasicontinuum. The bound state is coupled to any level in the L = 1 continuum with the same rate. Any level in the Lth continuum is coupled to any other level in the (L–1) st and (L+1)st continua with equal rates. We have calculated numerically the response of this atom to a laser pulse without introducing the rotating wave approximation.

© 1989 Optical Society of America