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Time- and angle-resolved photoemission spectroscopy with optimized high-harmonic pulses using frequency-doubled Ti:Sapphire lasers
Steffen Eich, Jurij Urbančič, 2014, original scientific article

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.
Found in: ključnih besedah
Keywords: angle-resolved photoemission spectroscopy, ARPES, high harmonic generation, ultrafast surface science
Published: 20.04.2017; Views: 4345; Downloads: 0
.pdf Fulltext (1,80 MB)

Topological properties and self-energy effects in elemental Yb
L. Petaccia, D. Ceresoli, S. Iacobucci, A. Ruocco, Giovanni Stefani, Luka Novinec, M. I. Trioni, Sandra Gardonio, F. Offi, P. M. Sheverdyaeva, 2021, original scientific article

Found in: ključnih besedah
Summary of found: ...electronic structure, topological materials, lanthanides, angle-resolved photoemission spectroscopy...
Keywords: electronic structure, topological materials, lanthanides, angle-resolved photoemission spectroscopy
Published: 03.12.2021; Views: 916; Downloads: 31
.pdf Fulltext (1,94 MB)
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