Characterization of Molecular Dynamics in Ultrashort Laser Fields

T. Niederhausen, U. Thumm
James R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS, USA

B. Feuerstein, T. Ergler, A. Rudenko, R. Moshammer, J. Ullrich
MPI fuer Kernphysik, Heidelberg, Germany

Reaction Microscope-based, complete, and time-resolved Coulomb explosion imaging of vibrating and dissociating $D₂²⁺ molecules with femtosecond time-resolution allowed us to perform an internuclear distance (R-)dependent Fourier analysis of the corresponding wave packets. Our wave packet propagation calculations demonstrate that the obtained two-dimensional R-dependent frequency spectra enable the complete characterization of the wave packet dynamics and directly visualize the field-modified molecular potential curves in intense, ultrashort laser pulses, cf., Phys. Rev. Lett. 99 153002 (2007).

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, and by the National Science Foundation.

Presented at DAMOP, May 2008, in State College, PA.

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