Erlangen 2018 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 31: Strong laser fields - II
A 31.4: Vortrag
Mittwoch, 7. März 2018, 15:00–15:15, K 2.019
Strong field ionization dynamics of photoelectrons in parallel mid infrared two color laser fields — •Daniel Würzler1,2, Slawomir Skruszewicz1,2, Max Sayler1,2, Danilo Zille1,2, Yinyu Zhang1,2, Daniel Adolph1,2, Philipp Wustelt1,2, Max Möller1,2, Stephan Fritzsche1,3, Josef Tiggesbäumker4, Dieter Bauer4, and Gerhard G. Paulus1,2 — 1Institute of Optics and Quantum-Electronics, Max-Wien-Platz 1, D-07743 Jena, Germany — 2Helmholtz Institute Jena, Fröbelstieg 3, D-07743 Jena, Germany — 3Institute of Theoretical Physics, Max-Wien-Platz 1, D-07743 Jena, Germany — 4Institute of Physics, Albert-Einstein-Str. 24, D-18059 Rostock, Germany
Due to the nonlinearity of strong-field ionization processes, even small modifications of the ionizing laser field (ω) can have a significant impact on the resulting dynamics. Such modifications can be realized with subcycle precision by coherently superimposing the ionizing laser field with its second harmonic (2ω) [1-2]. Here, we apply this technique to the mid-IR wavelength regime (λω= 1800nm and λ2ω = 900nm) in parallel field configuration. By tuning the relative phase, ϕrel, of the two fields, we investigate phase-dependent photoelectron momenta spectra of Xe. Using the ’phase of the phase’ [3] of the spectra, we discuss various contributions to forward scattering from trajectories revisiting the ion several times during ionization [4].
[1] C. Figueira de Morisson Faria et al. Phys. Rev. A 61, 063415 [2] D. Shafir et al. Nature 485, 343-346 [3] S. Skruszewicz et al. Phys. Rev. Lett. 115, 043001 [4] M. Möller et al. Phys. Rev. A 90, 023412