Time- and angle-resolved photoemission spectroscopy of solids in the extreme ultraviolet at 500 kHz repetition rate

• Published in: Review of scientific instruments Vol. 90; no. 2; pp. 023104 - 23112
• Main Authors: Puppin, M., Deng, Y., Nicholson, C. W., Feldl, J., Schröter, N. B. M., Vita, H., Kirchmann, P. S., Monney, C., Rettig, L., Wolf, M., Ernstorfer, R.
• Format: Journal Article
• Language: English
• Published: United States American Institute of Physics 01.02.2019; American Institute of Physics (AIP)
• Subjects: Brillouin zones; Harmonic generations; MATERIALS SCIENCE; OTHER INSTRUMENTATION; Photoelectric emission; Photoelectron spectroscopy; Photons; Repetition; Response functions; Scientific apparatus & instruments; Spectrum analysis; State of the art; Ultraviolet radiation; Ytterbium
• ISSN: 0034-6748; 1089-7623; 1089-7623
• DOI: 10.1063/1.5081938

Time- and angle-resolved photoemission spectroscopy (trARPES) employing a 500 kHz extreme-ultraviolet light source operating at 21.7 eV probe photon energy is reported. Based on a high-power ytterbium laser, optical parametric chirped pulse amplification, and ultraviolet-driven high-harmonic generation, the light source produces an isolated high-harmonic with 110 meV bandwidth and a flux of more than 1011 photons/s on the sample. Combined with a state-of-the-art ARPES chamber, this table-top experiment allows high-repetition rate pump-probe experiments of electron dynamics in occupied and normally unoccupied (excited) states in the entire Brillouin zone and with a temporal system response function below 40 fs.