Theory of fluorescence spectra induced by short laser pulses

Abstract

We consider a single-photon bound–bound and bound–free transitions induced by short, coherent laser pulses. Fluorescence energy spectra are calculated. In the case of the fluorescence to a side level, a number of analytic results are presented. For the resonance-fluorescence case the compact Bloch-like equations are derived for the ionization to an autoionization resonance and numerically analyzed. The multipeak structure of the spectra previously found in the simplified models is shown to be a universal feature. The number of maxima of the spectrum increases with the area of the pulse.