Physics

Photoemission spectroscopy

Laser

Optics

Astronomy

Angle-resolved photoemission spectroscopy

Extreme ultraviolet

X-ray photoelectron spectroscopy

Excited state

Atomic physics

Photon

Materials science

Ultraviolet

Photon energy

Spectroscopy

Nuclear magnetic resonance

Spectral line

Quantum mechanics

High harmonic generation

Review of Scientific Instruments

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.

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