Time-resolved photoemission by attosecond streaking: extraction of time information
By S. Nagele, R. Pazourek, J. Feist, K. Doblhoff-Dier, C. Lemell, K. THok'esi, J. Burgdorfer. 2011
138 citations recorded by the source corpus.
Attosecond streaking of atomic photoemission holds the promise to provide unprecedented information on the release time of the photoelectron. We show that attosecond streaking phase shifts indeed contain timing (or spectral phase) information associated with the Eisenbud–Wigner–Smith time delay matrix of quantum scattering. However, this is only accessible if the influence of the streaking infrared (IR) field on the emission process is properly accounted for. The IR probe field can strongly modify the observed streaking phase shift. We show that the part of the phase shift (‘time shift’) due to the interaction between the outgoing electron and the combined Coulomb and IR laser fields can be described classically. By contrast, the strong initial-state dependence of the streaking phase shift is only revealed through the solution of the time-dependent Schrödinger equation in its full dimensionality. We find a time delay between the hydrogenic 2s and 2p initial states in He+ exceeding 20 as for a wide range of IR intensities and XUV energies.
Subfields: Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/636579046389c81135fff0269a66be2b317269f9
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In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Introduction to attosecond delays in photoionization (2012, methodology): “Using this ‘photon-picture’, we have identified the phases of the lowest order quantum paths and we have shown that the same temporal information about the photoionization process is gained with either pulse structure, SAP or APT.”
- Interpreting attoclock measurements of tunnelling times (2014, methodology): “In one-photon ionization [1], understanding the nature of measured delays required accurate calibration of the attosecond streak camera, with the hydrogen atom as a benchmark [12–17].”