Erlangen 2018 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 25: Poster Session I
A 25.25: Poster
Dienstag, 6. März 2018, 16:15–18:15, Redoutensaal
Attosecond time-resolved photoelectron holography — Gil Porat1, Gideon Alon2, Shaked Rozen2, Oren Pedatzur2, •Michael Krüger2, Adi Natan3, Barry D. Bruner2, Marc J. J. Vrakking4, and Nirit Dudovich2 — 1JILA, NIST and University of Boulder, Colorado, USA — 2Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 76100, Israel — 3Stanford PULSE Institute, SLAC, Menlo Park, California, USA — 4Max-Born-Institut, 12489 Berlin, Germany
Ultrafast strong-field physics provides insight into quantum phenomena that evolve on an attosecond time scale, the most fundamental of which is quantum tunneling. In this work we apply attosecond photo-electron holography [1] as a new method to resolve the temporal properties of the tunneling process. Adding a weak second harmonic (SH) field to a strong fundamental laser field enables us to reconstruct the ionization times of photoelectrons that play a role in the formation of a photoelectron hologram with attosecond precision. We decouple the contributions of the two arms of the hologram and resolve the subtle differences in their ionization times, separated by only a few tens of attoseconds.
[1] Y. Huismans et al., Science 331, 61 (2011).