We introduce an extreme ultraviolet (XUV)-beamline designed for the time-resolved investigation and coherent control of attosecond (as) electron dynamics in atoms and molecules by polarization-shaped as-laser pulses. Shaped as-pulses are generated through high-harmonic generation (HHG) of tailored white-light supercontinua (WLS) in noble gases. The interaction of shaped as-pulses with the sample is studied using velocity map imaging (VMI) techniques to achieve the differential detection of photoelectron wave packets. The instrument consists of the WLS-beamline, which includes a hollow-core fiber compressor and a home-built 4f polarization pulse shaper, and the high-vacuum XUV-beamline, which combines an HHG-stage and a versatile multi-experiment vacuum chamber equipped with a home-built VMI spectrometer. The VMI spectrometer allows the detection of photoelectron wave packets from both the multiphoton ionization (MPI) of atomic or molecular samples by the tailored WLS-pulses and the single-photon ionization (SPI) by the shaped XUV-pulses. To characterize the VMI spectrometer, we studied the MPI of xenon atoms by linearly polarized WLS pulses. To validate the interplay of these components, we conducted experiments on the SPI of xenon atoms with linearly polarized XUV-pulses. Our results include the reconstruction of the 3D photoelectron momentum distribution (PMD) and initial findings on the coherent control of the PMD by tuning the spectrum of the XUV-pulses with the spectral phase of the WLS. Our results demonstrate the performance of the entire instrument for HHG-based photoelectron imaging spectroscopy with prototypical shaped pulses. Perspectively, we will employ polarization-tailored WLS-pulses to generate polarization-shaped as-pulses.
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September 2024
Research Article|
September 17 2024
XUV-beamline for photoelectron imaging spectroscopy with shaped pulses
M. Behrens
;
M. Behrens
(Conceptualization, Data curation, Formal analysis, Investigation, Software, Visualization, Writing – original draft, Writing – review & editing)
Institut für Physik, Carl von Ossietzky Universität Oldenburg
, Carl-von-Ossietzky-Straße 9-11, D-26129 Oldenburg, Germany
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L. Englert
;
L. Englert
(Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Visualization, Writing – original draft, Writing – review & editing)
Institut für Physik, Carl von Ossietzky Universität Oldenburg
, Carl-von-Ossietzky-Straße 9-11, D-26129 Oldenburg, Germany
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T. Bayer
;
T. Bayer
(Conceptualization, Data curation, Formal analysis, Investigation, Software, Visualization, Writing – original draft, Writing – review & editing)
Institut für Physik, Carl von Ossietzky Universität Oldenburg
, Carl-von-Ossietzky-Straße 9-11, D-26129 Oldenburg, Germany
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M. Wollenhaupt
M. Wollenhaupt
a)
(Conceptualization, Formal analysis, Funding acquisition, Methodology, Project administration, Resources, Supervision, Visualization, Writing – original draft, Writing – review & editing)
Institut für Physik, Carl von Ossietzky Universität Oldenburg
, Carl-von-Ossietzky-Straße 9-11, D-26129 Oldenburg, Germany
a)Author to whom correspondence should be addressed: [email protected]
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a)Author to whom correspondence should be addressed: [email protected]
Rev. Sci. Instrum. 95, 093101 (2024)
Article history
Received:
June 14 2024
Accepted:
September 03 2024
Citation
M. Behrens, L. Englert, T. Bayer, M. Wollenhaupt; XUV-beamline for photoelectron imaging spectroscopy with shaped pulses. Rev. Sci. Instrum. 1 September 2024; 95 (9): 093101. https://doi.org/10.1063/5.0223450
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