https://doi.org/10.1140/epjd/e2003-00154-1
Femtosecond pump-probe experiments on non-stoichiometric sodium-fluoride clusters
I. First direct observation of periodical structural changes in Na2F
Institut für Experimentalphysik, Freie Universität
Berlin, Arnimallee 14, 14195 Berlin, Germany
Corresponding author: a lupu@physik.fu-berlin.de
Received:
10
September
2002
Published online:
3
July
2003
In this paper we present two-color pump and probe
spectroscopy on Na2F, the smallest of the non-stoichiometric
sodium-fluoride clusters (NanF
), in molecular beams by
employing femtosecond laser pulses. The molecules were pumped into
the first excited state by one photonic transition and
consecutively ionized from there by the second photon. We resolved
the wavepacket oscillatory motion involving periodical structural
rearrangements in the first excited state of Na2F with a period
of ~ 185 fs. The time-resolved experiments show that sodium
fluoride clusters provide interesting features which can be
manipulated in optimal control experiments.
PACS: 36.40.Vz – Optical properties of clusters / 33.80.-b – Photon interactions with molecules / 36.40.Mr – Spectroscopy and geometrical structure of clusters / 33.15.Ta – Mass spectra
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003
