Time-delays in photoionization with attosecond XUV pulses |
|
| Alfred Maquet | |
| Université Pierre et Marie Curie, Paris | |
| I shall report on recent advances in the theoretical background to address the question of the "time delays" observed in single-photon ionization from different subshells in rare gas atoms, [1], [2]. Our interpretation is that the observed delays result from two distinct contributions: i) a "Wigner-like" delay linked to the energy-derivative of the phase-shifts of the photoelectron wave function; ii) a laser-induced delay induced by the IR laser used to perform the experiments, either "streaking" [1] or "RABBIT" [2].
[1] M. Schultze et al. Science 328, 1658 (2010). |