Eimer, F.F.EimerWeise, F.F.WeiseMerli, A.A.MerliBirkner, S.S.BirknerSauer, F.F.SauerWöste, L.L.WösteLindinger, A.A.LindingerAanolu, R.R.AanoluKoch, C.P.C.P.KochSalzmann, W.W.SalzmannMullins, T.T.MullinsGötz, S.S.GötzWester, R.R.WesterWeidemüller, M.M.Weidemüller2022-03-042022-03-042009https://publica.fraunhofer.de/handle/publica/22104710.1140/epjd/e2009-00212-8We present spectrally resolved pump-probe experiments on the photoassociation of ultracold rubidium atoms with shaped ultrashort laser pulses. The pump pulse causes a free-bound transition leading to a coherent transient signal of rubidium molecules in the first excited state. In order to achieve a high frequency resolution the bandwidth of the pump pulse is reduced to a few wavenumbers. The frequency dependence of the transient signal close to the D1 atomic resonance is investigated for characteristic pump-probe delay times. The observed spectra, which show a pronounced dip for pump-probe coincidence, are interpreted using quantum dynamical calculations.en621530journal article