Time- and angle-resolved photoemission spectroscopy with optimized high-harmonic pulses using frequency-doubled Ti:Sapphire lasers

Eich, S., Stange, A., Carr, A. V., Urbancic, J., Popmintchev, T., Wiesenmayer, M., Jansen, Klaus, Ruffing, A., Jakobs, S., Rohwer, T., Hellmann, S., Chen, C., Matyba, P., Kipp, L., Rossnagel, K., Bauer, M., Murnane, M. M., Kapteyn, H. C., Mathias, S. and Aeschlimann, M. (2014) Time- and angle-resolved photoemission spectroscopy with optimized high-harmonic pulses using frequency-doubled Ti:Sapphire lasers Journal of Electron Spectroscopy and Related Phenomena, 195 . pp. 231-236.

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Abstract

Time- and angle-resolved photoemission spectroscopy (trARPES) using femtosecond extreme ultraviolet high harmonics has recently emerged as a powerful tool for investigating ultrafast quasiparticle dynamics in correlated-electron materials. However, the full potential of this approach has not yet been achieved because, to date, high harmonics generated by 800 nm wavelength Ti:Sapphire lasers required a trade-off between photon flux, energy and time resolution. Photoemission spectroscopy requires a quasi-monochromatic output, but dispersive optical elements that select a single harmonic can significantly reduce the photon flux and time resolution. Here we show that 400 nm driven high harmonic extreme-ultraviolet trARPES is superior to using 800 nm laser drivers since it eliminates the need for any spectral selection, thereby increasing photon flux and energy resolution to <150 meV while preserving excellent time resolution of about 30 fs. (C) 2014 The Authors. Published by Elsevier B.V.

Document Type: Article
Additional Information: Times Cited: 2 0 2
Research affiliation: OceanRep > The Future Ocean - Cluster of Excellence
Kiel University
Refereed: Yes
ISSN: 0368-2048
Projects: Future Ocean
Date Deposited: 30 Mar 2015 12:10
Last Modified: 01 Aug 2018 09:03
URI: http://eprints.uni-kiel.de/id/eprint/27484

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