Towards the complete phase profiling of attosecond wave packets
ORAL
Abstract
Realistic attosecond wave packets have complex profiles that, in dispersive conditions, rapidly broaden or split in multiple components. Such behaviors are encoded in sharp features of the wave packet spectral phase. In a combined theoretical and experimental work on attosecond photoionization of helium [1], we use the energy-resolved quantum beating between one- and two-photon transitions to reconstruct sharp features of the spectral phase, as a continuum function of energy across the full spectral range of an attosecond pulse train. We demonstrate that this scheme can be used to observe the periodic modulations of the spectral phase of an attosecond pulse train due to the individual chirp of each harmonic.
[1] J. Fuchs et al. Phys. Rev. Research 3, 013195 (2021)
*All authors acknowledge the COST action CA18222 (Attosecond Chemistry). J.F., L.C., and U.K. acknowledge the support of the NCCR MUST, funded by the Swiss National Science Foundation. L.A. and N.D. acknowledge the support of the U.S. National Science Foundation under NSF Grants No. PHY-1607588 and No. PHY-1912507 and by the UCF in-house OR Grant Acc. No. 24089045. Parts of the calculations were performed on the Vienna Scientific Cluster (VSC3). S.D. and J.B. acknowledge the support by the WWTF through Project No. MA14-002, and the FWF through Projects No. FWF-SFB041-VICOM and No. FWF-W1243-Solids4Fun, as well as the IMPRS-APS. F.M. acknowledges the MICINN projects PID2019-105458RB-I00, the "Severo Ochoa" Programme for Centres of Excellence in R&D (SEV-2016-0686), and the "María de Maeztu" Programme for Units of Excellence in R&D (CEX2018-000805-M).
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Publication: PHYSICAL REVIEW RESEARCH 3, 013195 (2021)
Presenters
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Nicolas Douguet
- Kennesaw State University
- Kennesaw University