Selective preparation of ground state wave-packets: a theoretical analysis of femtosecond pump-dump-probe experiments on the potassium dimer
Institut für Physikalische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
Corresponding author: a email@example.com
Revised: 21 November 2000
Published online: 15 May 2001
We present simulations on pump-dump-probe experiments performed on the potassium dimer. The interaction of two time-delayed laser pulses prepares vibrational wave packets in the electronic ground state. The quantum calculations reveal to what extent it is possible to prepare a ground state superposition of states with high versus low vibrational quantum numbers by changing the pump-dump delay time. It is shown that transient signals may exhibit interference effects which are due to characteristics of ground state wave-packets composed of two components showing different vibrational dynamics. In this way the signals are able to yield information about vibrational overtone motion.
PACS: 31.70.Hq – Time-dependent phenomena: excitation and relaxation processes, and reaction rates / 33.80.Wz – Other multiphoton processes
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2001