2011/04/30 by Magnus H. Berntsen, M. H. Berntsen, O. Götberg +1 · 60 citations
Biochemistry, Genetics and Molecular Biology · Physics and Astronomy · #Advanced Chemical Physics Studies #Advanced Electron Microscopy Techniques and Applications #Atomic physics #Brillouin zone #Electron #Laser #Materials science #Nuclear magnetic resonance #Nuclear physics #Optics #Photoemission spectroscopy #Physics #Physics of Superconductivity and Magnetism #Picosecond #Spectrum analyzer #Time of flight #X-ray photoelectron spectroscopy #physics.ins-det
paper · pdf · doi:10.1063/1.3637464
published in Review of Scientific Instruments 82(9), 095113 (American Institute of Physics) · 9 pages, 7 figures
openalex publication_date 2011/09/01 · arxiv created 2011/09/26 · arxiv updated 2011/09/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present an experimental setup for laser-based angle-resolved time-of-flight photoemission. Using a picosecond pulsed laser, photons of energy 10.5 eV are generated through higher harmonic generation in xenon. The high repetition rate of the light source, variable between 0.2 and 8 MHz, enables high photoelectron count rates and short acquisition times. By using a time-of-flight analyzer with angle-resolving capabilities, electrons emitted from the sample within a circular cone of up to ±15° can be collected. Hence, simultaneous acquisition of photoemission data for a complete area of the Brillouin zone is possible. The current photon energy enables bulk sensitive measurements, high angular resolution, and the resulting covered momentum space is large enough to enclose the entire Brillouin zone in cuprate high-T(c) superconductors. Fermi edge measurements on polycrystalline Au shows an energy resolution better than 5 meV. Data from a test measurement of the Au(111) surface state are presented along with measurements of the Fermi surface of the high-T(c) superconductor Bi(2)Sr(2)CaCu(2)O(8 + δ) (Bi2212).