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MO: Molekülphysik

MO 7: Posters Wednesday: Theory: Structure and Dynamics

MO 7.12: Poster

Mittwoch, 4. April 2001, 12:30–15:00, AT3

Characterization of nuclear wave packets prepared by chirped femtosecond pulses using time–resolved photoelectron spectroscopy — •I. Boustani, M. Erdmann, Z. Shen, and V. Engel — Institut für Physikalische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany

We regard the excitation of a diatomic molecule with a chirped ultrashort laser pulse. In this way, nuclear wave packets are prepared which, depending on the chirp parameter, exhibit different vibrational dynamics. The respective features can be understood using a simple classical approach. Using the potassium dimer as a numerical example, we show that time–resolved photoelectron spectroscopy is able to map the characteristica of the nuclear probability density and, in particular, squeezing effects induced by the laser chirp.