Dynamics of Coherent Excitation using an Ion Beam as a Probe

M. A. Gearba, H. A. Camp, M. Shah, B. D. DePaola
(J. R. Macdonald Lab, Kansas State Univ.),

S. R. Lundeen
(Dept. Physics, Colorado State Univ.),

R. Bredy
(Univ. Lyon, France)

We measure the dynamics of coherent excitation in a target of cold Rb vapor. The three lowest electronic states, 5s, 5p, and 4d, are excited using the STIRAP (stimulated Raman adiabatic passage) method. Using charge transfer to a beam of ions as a probe, we are able to measure the relative populations of all three of these states simultaneously as they vary in time. The temporal resolution of the system is about 2 ns. The measurement technique is quite general and other potential applications will be discussed.

This work was supported by the Chemical Sciences, Geosciences and Biosciences Division,
Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy.

Submitted to DAMOP, May 2004 in Tucson, AZ.

 

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