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Title:Time- and angle-resolved photoemission spectroscopy with optimized high-harmonic pulses using frequency-doubled Ti:Sapphire lasers
Authors:Eich, Steffen (Author)
Urbančič, Jurij (Author)
et al.
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Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
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.
Keywords:angle-resolved photoemission spectroscopy, ARPES, high harmonic generation, ultrafast surface science
Year of publishing:2014
Number of pages:6
COBISS_ID:4770299 Link is opened in a new window
DOI:DOI: 10.1016/j.elspec.2014.04.013 Link is opened in a new window
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Record is a part of a journal

Title:Journal of Electron Spectroscopy and Related Phenomena
Year of publishing:2014