Journal
REVIEW OF SCIENTIFIC INSTRUMENTS
Volume 93, Issue 12, Pages -Publisher
AIP Publishing
DOI: 10.1063/5.0104679
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Funding
- Max-Planck-Gesellschaft
- European Metrology Program for Innovation and Research (EMPIR) [20FUN01 TSCAC]
- EMPIR programme - European Union
- Max-Planck-RIKEN-PTB-Center for Time, Constants and Fundamental Symmetries and the Collaborative Research Center [SFB 1225]
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In this study, a compact velocity-map imaging (VMI) spectrometer for photoelectron imaging at 100 MHz repetition rate is proposed and demonstrated. By tomographically studying multi-photon ionization (MPI) of gas-phase atoms, the functioning of the VMI spectrometer is illustrated and the photoelectron angular momentum distribution of xenon is reconstructed.
We present a compact velocity-map imaging (VMI) spectrometer for photoelectron imaging at 100 MHz repetition rate. Ultrashort pulses from a near-infrared frequency comb laser are amplified in a polarization-insensitive passive femtosecond enhancement cavity. In the focus, multi-photon ionization (MPI) of gas-phase atoms is studied tomographically by rotating the laser polarization. We demonstrate the functioning of the VMI spectrometer by reconstructing photoelectron angular momentum distributions from xenon MPI. Our intra-cavity VMI setup collects electron energy spectra at high rates, with the advantage of transferring the coherence of the cavity-stabilized femtosecond pulses to the electrons. In addition, the setup will allow studies of strong-field effects in nanometric tips. (C) 2022 Author(s)
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