| Title: | Time- and angle-resolved photoemission spectroscopy with optimized high-harmonic pulses using frequency-doubled Ti:Sapphire lasers |
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| Authors: | ID Eich, Steffen, Universityof Kaiserslauternan,Germany (Author)
ID Urbančič, Jurij (Author), et al. |
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| Files: |
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| Language: | English |
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| Work type: | Not categorized |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | UNG - University of Nova Gorica
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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. |
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| Keywords: | angle-resolved photoemission spectroscopy, ARPES, high harmonic generation, ultrafast surface science |
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| Year of publishing: | 2014 |
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| Number of pages: | 6 |
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| Numbering: | 2014 |
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| PID: | 20.500.12556/RUNG-3067-533b5e8b-6c0b-2f18-ac6b-270b20546339 |
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| COBISS.SI-ID: | 4770299 |
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| DOI: | DOI: 10.1016/j.elspec.2014.04.013 |
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| NUK URN: | URN:SI:UNG:REP:6ON4O0P9 |
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| Publication date in RUNG: | 20.04.2017 |
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| Views: | 6070 |
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| Downloads: | 0 |
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