title: A high-resolution time-of-flight energy analyzer for femtosecond electron pulses at 30 keV.
abstract: We report a time-of-flight spectrometer for electron pulses at up to 30 keV, which is a suitable energy for atomic-resolution femtosecond investigations via time-resolved electron diffraction, microscopy, and energy loss spectroscopy. For realistic femtosecond beams without apertures, the instrument's energy resolution is ∼0.5 eV (full width at half maximum) or 2 × 10(-5) at a throughput of 50%-90%. We demonstrate the analyzer's versatility by three first applications, namely, femtosecond electron pulse metrology via optical streaking, in situ drift correction in laser-microwave synchronization for electron pulse compression, and time-resolved electron energy loss spectroscopy of aluminum, showing the instrument's capability of tracking plasmonic loss peak positions with few-meV accuracy.
authors.affiliation: Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching, Germany and Max-Planck-Institute of Quantum Optics, Hans-Kopfermann-Str. 1, 85748 Garching, Germany.
authors.forename: Alexander
authors.initials: A
authors.lastname: Gliserin
authors.affiliation: Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching, Germany and Max-Planck-Institute of Quantum Optics, Hans-Kopfermann-Str. 1, 85748 Garching, Germany.
authors.forename: Matthew
authors.initials: M
authors.lastname: Walbran
authors.affiliation: Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching, Germany and Max-Planck-Institute of Quantum Optics, Hans-Kopfermann-Str. 1, 85748 Garching, Germany.
authors.forename: Peter
authors.initials: P
authors.lastname: Baum