Time- and angle-resolved photoemission spectroscopy is a powerful technique to study ultrafast electronic dynamics in solids. Here, an innovative optical setup based on a 100-kHz Yb laser source is presented. Exploiting non-collinear optical parametric amplification and sum-frequency generation, ultrashort pump (hν = 1.82 eV) and ultraviolet probe (hν = 6.05 eV) pulses are generated. Overall temporal and instrumental energy resolutions of, respectively, 85 fs and 50 meV are obtained. Time- and angle-resolved measurements on BiTeI semiconductor are presented to show the capabilities of the setup.
An innovative Yb-based ultrafast deep ultraviolet source for time-resolved photoemission experiments
F. Boschini, H. Hedayat, C. Dallera, P. Farinello, C. Manzoni, A. Magrez, H. Berger, G. Cerullo, E. Carpene; An innovative Yb-based ultrafast deep ultraviolet source for time-resolved photoemission experiments. Rev. Sci. Instrum. 1 December 2014; 85 (12): 123903. https://doi.org/10.1063/1.4903347
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