Double-excitation dynamics in m-LPPP probed with sub-20 fs time resolution

摘要

In a novel modifiation of transient differential transmission spectroscopy,the first excited state S_1 is reexcited via a second laser pulse towards a higher lying state S_n.The dynamics of the relaxation of this state S_n as well as the states created from S_n are revealed by a broad-band probe pulse.