Non-Markovian effects on optical absorption

Abstract
In this paper, we shall report the investigation of the non-Markovian effects of the dynamical process on optical absorption. It will be shown that in steady-state experiments the non-Markovian effects cannot be probed. The non-Markovian effects on the transient pump-probe experiment are treated, and a couple of typical memory functions have been used to obtain the transient band-shape functions. Finally, probe-pulse duration effects on the absorption are considered.