Heidelberg 2015 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

A: Fachverband Atomphysik

A 24: Attosecond physics

A 24.5: Vortrag

Mittwoch, 25. März 2015, 15:30–15:45, C/kHS

Time Delays in Two-Photon IonizationJing Su1, •Hongcheng Ni1,2, Agnieszka Jaron-Becker1, and Andreas Becker11JILA and Department of Physics, University of Colorado, Boulder, Colorado 80309-0440, USA — 2Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Straße 38, 01187 Dresden, Germany

We study the time delays in two-photon ionization of the helium atom. We find that in the case of a nonresonant transition the absorption of the two photons occurs without time delay. In contrast, for a resonant transition a substantial absorption time delay is present, which scales linearly with the duration of the ionizing pulse. The two-photon absorption time delay can be related to the phase acquired during the transition of the electron from the initial ground state to the continuum.

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2015 > Heidelberg