Time-resolved spectroscopy of doubly-excited states in helium
1 Max-Planck Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
2 Center for Quantum Dynamics, Ruprecht-Karls-Universität Heidelberg, 69120 Heidelberg, Germany
A two-electron wave packet among the lowest-lying doubly-excited states in helium is experimentally observed. It creates a 1-femtosecond modulation in the transient-absorption signal modified by a time-delayed coupling laser.
© Owned by the authors, published by EDP Sciences, 2013
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