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A: Fachverband Atomphysik

A 3: Interaction with strong or short laser pulses I

A 3.5: Talk

Monday, March 17, 2014, 11:30–11:45, BEBEL E44/46

Time delay of laser-induced tunnel-ionization — •Enderalp Yakaboylu, Michael Klaiber, Heiko Bauke, Karen Z. Hatsagortsyan, and Christoph H. Keitel — Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg,Germany

The tunneling time delay, stemming from Wigner’s definition, is investigated for laser-induced tunnel-ionization. First, the concept of Wigner time delay is applied to one-dimensional model configurations of tunneling and it is compared with results obtained from the exact propagator. Then, by adapting Wigner’s time delay definition, the tunneling time is investigated in the deep-tunneling and in the near-threshold-tunneling regimes of tunnel-ionization from a Coulomb potential. It is shown that while in the deep-tunneling regime signatures of the tunneling time delay are not measurable at remote distance, it is detectable, however, in the near-threshold-tunneling regime [1,2].

[1] E. Yakaboylu, M. Klaiber, H. Bauke, K. Z. Hatsagortsyan, and C. H. Keitel, preprint arXiv:1309.0610 (to be published in Phys. Rev. A.)

[2] M. Klaiber, E. Yakaboylu, H. Bauke, K. Z. Hatsagortsyan, and C. H. Keitel, Phys. Rev. Lett. 110, 053814 (2013)