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Attosecond Streaking Time Delays: Finite-Range Interpretation and Applications
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Appl. Sci. 2019, 9(3), 592; https://doi.org/10.3390/app9030592

Equivalence of RABBITT and Streaking Delays in Attosecond-Time-Resolved Photoemission Spectroscopy at Solid Surfaces

1
Department of Physics, Bielefeld University, Universitätsstr. 25, 33615 Bielefeld, Germany
2
Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, Erwin-Schrödinger-Str. 46, 67663 Kaiserslautern, Germany
*
Author to whom correspondence should be addressed.
Received: 19 December 2018 / Revised: 1 February 2019 / Accepted: 6 February 2019 / Published: 11 February 2019
(This article belongs to the Special Issue Attosecond Science and Technology: Principles and Applications)
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Abstract

The dynamics of the photoelectric effect in solid-state systems can be investigated via attosecond-time-resolved photoelectron spectroscopy. This article provides a comparison of delay information accessible by the two most important techniques, attosecond streaking spectroscopy and reconstruction of attosecond beating by interference of two-photon transitions (RABBITT) at solid surfaces, respectively. The analysis is based on simulated time-resolved photoemission spectra obtained by solving the time-dependent Schrödinger equation in a single-active-electron approximation. We show a continuous transition from the few-cycle RABBITT regime to the streaking regime as two special cases of laser-assisted photoemission. The absolute delay times obtained by both methods agree with each other, within the uncertainty limits for kinetic energies >10 eV. Moreover, for kinetic energies >10 eV, both streaking delay time and RABBITT delay time coincide with the classical time of flight for an electron propagating from the emitter atom to the bulk-vacuum interface, with only small deviations of less than 4 as due to quantum mechanical interference effects. View Full-Text
Keywords: attosecond; streaking; RABBITT; photoemission; time-resolved photoemission; photoemission delay; photoelectron; photoelectron spectroscopy; photoeffect; chronoscopy attosecond; streaking; RABBITT; photoemission; time-resolved photoemission; photoemission delay; photoelectron; photoelectron spectroscopy; photoeffect; chronoscopy
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Gebauer, A.; Neb, S.; Enns, W.; Stadtmüller, B.; Aeschlimann, M.; Pfeiffer, W. Equivalence of RABBITT and Streaking Delays in Attosecond-Time-Resolved Photoemission Spectroscopy at Solid Surfaces. Appl. Sci. 2019, 9, 592.

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