Berlin 2001 – scientific programme
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Q: Quantenoptik
Q 17: Poster: Cooling and Trapping
Q 17.24: Poster
Wednesday, April 4, 2001, 12:30–15:00, AT2
Molecular matter wave interferometer using STIRAP as beamsplitter and mirror - a new tool for the investigation of molecular systems — •Matthias Frank, Kirsten Jaspers, Christian Lisdat, Horst Knöckel, and Eberhard Tiemann — SFB 407,Institut für Quantenoptik, Universität Hannover
We already operate a matter wave interferometer in the Ramsey-Bordé
configuration on a K2 molecular beam [1], which at present is used
to investigate cold collisons between atoms and molecules [2].To overcome
limitations posed by the short lifetimes (1 µ s) of the electronically
excited b state of K2 involved in this experiment we plan to change to
a similar interferometer configuration but using the STIRAP method [3] as
beamsplitter / mirror for molecular wave packets of the long living
rotational-vibrational levels of the electronic ground state.
The poster presents our studies concerning STIRAP as beamsplitter, some
complications due to the hyperfine structure of the molecular ground state
as well as a first approach to this ground state interferometer.
Ch. Lisdat, M. Frank, H. Knöckel, M.-L. Almazor and E. Tiemann,
Eur. Phys. J. D 12, 235 (2000)
Ch. Lisdat, M. Frank, Ch. P. Joshi, H. Knöckel and E. Tiemann,
see separate poster during this conference
K. Bergmann, H. Theuer, B.W. Shore, Rev. Mod. Phys.,
70, 1003, (1998)