Strong Laser Fields
Department of Molecular and Optical Physics - University of Freiburg, Germany

Non-ponderomotive effects in multiphoton ionization of molecular hydrogen
T. Wilbois and H. Helm
Institute of Physics, Albert Ludwigs University, Stefan Meier Str 19, D-79104 Freiburg, Germany

Phys. Rev. A 83, 053414 (2011) [6 pages]


Anomalous photo-electron angular distributions are observed at certain wavelengths in strongfield ionization of H2. We relate this feature to ac-Stark shifts from bound-bound transitions in the Rydberg manifold of principal quantum number n=3 and 4. A model of the multi-state interaction supports this interpretation.

©2011 American Physical Society

DOI:   10.1103/PhysRevA.83.053414
PACS: 33.80.Rv