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A: Fachverband Atomphysik

A 4: Atomic systems in external fields

A 4.3: Vortrag

Montag, 11. März 2019, 11:15–11:30, S HS 3 Physik

Extracting laser-coherent information from a photoelectron spectrum of a complex target using the phase-of-the-phase — •Vasily Tulsky and Dieter Bauer — University of Rostock, Rostock, Germany

Electron spectra produced from many-electron systems irradiated by an intense laser field can include a significant or even dominant fraction of laser-incoherent electrons that are influenced by multiple scattering on other atoms or produced by thermal emission. A possible way to subtract all the laser-incoherent part is the application of the recently developed phase-of-the-phase (PoP) technique [1-3]. In order to demonstrate it, we model strong-field ionization of argon atoms trapped inside helium droplets. Corresponding photoelectrons experience multiple elastic scattering on helium atoms before reaching the detector and generate a dominant incoherent signal. We show that the PoP successfully reveals the features encoded in the coherent part of the total output signal.

[1] S. Skruszewicz, J. Tiggesbäumker, K.-H. Meiwes-Broer, M. Arbeiter, Th. Fennel, and D. Bauer, Phys. Rev. Lett. 115, 043001 (2015).

[2] M. A. Almajid, M. Zabel, S. Skruszewicz, J. Tiggesbäumker and D. Bauer, J. Phys. B 50, 19 (2017).

[3] V. A. Tulsky, M. A. Almajid, D. Bauer, Phys. Rev. A 98, 053433 (2018).