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

M. Puppin; Y. Deng; C. W. Nicholson; J. Feldl; N. B. M. Schroeter; H. Vita; P. S. Kirchmann; C. Monney; L. Rettig; M. Wolf; R. Ernstorfer

doi:10.1063/1.5081938

arXiv · 1811.06939

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

M. Puppin·Y. Deng·C. W. Nicholson·J. Feldl·N. B. M. Schroeter·H. Vita·P. S. Kirchmann·C. Monney·L. Rettig·M. Wolf·R. Ernstorfer

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Abstract

Time- and angle-resolved photoelectron spectroscopy (trARPES) employing a 500 kHz extreme-ultravioled (XUV) light source operating at 21.7 eV probe photon energy is reported. Based on a high-power ytterbium laser, optical parametric chirped pulse amplification (OPCPA), and ultraviolet-driven high-harmonic generation, the light source produces an isolated high-harmonic with 110 meV bandwidth and a flux of more than $10^{11}$ photons/second 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.

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M. Puppin, Y. Deng, C. W. Nicholson, J. Feldl, N. B. M. Schroeter, H. Vita, P. S. Kirchmann, C. Monney, L. Rettig, M. Wolf, R. Ernstorfer. 2019-02-13. Time- and angle-resolved photoemission spectroscopy of solids in the extreme ultraviolet at 500 kHz repetition rate. https://doi.org/10.1063/1.5081938

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