Hannover 2020 – scientific programme

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A: Fachverband Atomphysik

A 16: Interaction with strong or short laser pulses I

A 16.2: Talk

Wednesday, March 11, 2020, 11:30–11:45, a320

Revealing the strongly suppressed laser-coherent photoelectron signal using phase-of-the-phase spectroscopy — •Vasily Tulsky, Bennet Krebs, Felix Trepkau, Josef Tiggesbäumker, and Dieter Bauer — University of Rostock, 18051 Rostock, Germany

When a many-electron system is exposed to intense laser radiation, the generated photoelectron spectrum may include a significant or even dominant contribution of laser-incoherent electrons. Those can originate from thermal emission (thus, initially incoherent) or be influenced by multiple scattering before reaching the detector (therefore, losing the coherence). We propose a way to study the coherent part of photoelectron spectra using the phase-of-the-phase (PoP) technique [1-3]. We demonstrate that PoP can be successfully applied even when the incoherent part of the photoelectron signal appears to be dominant [4].

[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)

[4] V. A. Tulsky, B. Krebs, J. Tiggesbäumker, D. Bauer, arXiv:1911.0047 (2019) (submitted to J. Phys. B)