Extreme ultraviolet time- and angle-resolved photoemission setup with 21.5 meV resolution using high-order harmonic generation from a turn-key Yb:KGW amplifier

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dc.contributor.author Liu, Yangyang
dc.contributor.author Beetar, John
dc.contributor.author Hosen, Md Mofazzel
dc.contributor.author Dhakal, Gyanendra
dc.contributor.author Sims, Christopher
dc.contributor.author Kabir, Firoza
dc.contributor.author Etienne, Marc
dc.contributor.author Dimitri, Klauss
dc.contributor.author Regmi, Sabin
dc.contributor.author Liu, Yong
dc.contributor.author Pathak, Arjun
dc.contributor.author Kaczorowski, Dariusz
dc.contributor.author Neupane, Madhab
dc.contributor.author Chini, Michael
dc.contributor.department Ames Laboratory
dc.date 2020-02-21T23:26:42.000
dc.date.accessioned 2020-06-29T23:24:11Z
dc.date.available 2020-06-29T23:24:11Z
dc.date.embargo 2021-01-06
dc.date.issued 2020-01-06
dc.description.abstract <p>Characterizing and controlling electronic properties of quantum materials require direct measurements of nonequilibrium electronic band structures over large regions of momentum space. Here, we demonstrate an experimental apparatus for time- and angle-resolved photoemission spectroscopy using high-order harmonic probe pulses generated by a robust, moderately high power (20 W) Yb:KGW amplifier with a tunable repetition rate between 50 and 150 kHz. By driving high-order harmonic generation (HHG) with the second harmonic of the fundamental 1025 nm laser pulses, we show that single-harmonic probe pulses at 21.8 eV photon energy can be effectively isolated without the use of a monochromator. The on-target photon flux can reach 5 × 1010 photons/s at 50 kHz, and the time resolution is measured to be 320 fs. The relatively long pulse duration of the Yb-driven HHG source allows us to reach an excellent energy resolution of 21.5 meV, which is achieved by suppressing the space-charge broadening using a low photon flux of 1.5 × 108 photons/s at a higher repetition rate of 150 kHz. The capabilities of the setup are demonstrated through measurements in the topological semimetal ZrSiS and the topological insulator Sb2−xGdxTe3.</p>
dc.identifier archive/lib.dr.iastate.edu/ameslab_manuscripts/582/
dc.identifier.articleid 1591
dc.identifier.contextkey 16618080
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ameslab_manuscripts/582
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/7518
dc.language.iso en
dc.relation.ispartofseries IS-J 10143
dc.source.bitstream archive/lib.dr.iastate.edu/ameslab_manuscripts/582/IS_J_10143.pdf|||Sat Jan 15 01:01:52 UTC 2022
dc.source.uri 10.1063/1.5121425
dc.subject.disciplines Other Physics
dc.title Extreme ultraviolet time- and angle-resolved photoemission setup with 21.5 meV resolution using high-order harmonic generation from a turn-key Yb:KGW amplifier
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isOrgUnitOfPublication 25913818-6714-4be5-89a6-f70c8facdf7e
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