Time-, spin-, and angle-resolved photoemission spectroscopy with a 1-MHz 10.7-eV pulse laser
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- Kaishu Kawaguchi
- Institute for Solid State Physics (ISSP), The University of Tokyo 1 , Kashiwa, Chiba 277-8581, Japan
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- Kenta Kuroda
- Institute for Solid State Physics (ISSP), The University of Tokyo 1 , Kashiwa, Chiba 277-8581, Japan
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- Z. Zhao
- School of Information Science and Engineering, Shandong University 4 , Qingdao 266237, China
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- S. Tani
- Institute for Solid State Physics (ISSP), The University of Tokyo 1 , Kashiwa, Chiba 277-8581, Japan
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- A. Harasawa
- Institute for Solid State Physics (ISSP), The University of Tokyo 1 , Kashiwa, Chiba 277-8581, Japan
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- Y. Fukushima
- Institute for Solid State Physics (ISSP), The University of Tokyo 1 , Kashiwa, Chiba 277-8581, Japan
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- H. Tanaka
- Institute for Solid State Physics (ISSP), The University of Tokyo 1 , Kashiwa, Chiba 277-8581, Japan
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- R. Noguchi
- Institute for Solid State Physics (ISSP), The University of Tokyo 1 , Kashiwa, Chiba 277-8581, Japan
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- T. Iimori
- Institute for Solid State Physics (ISSP), The University of Tokyo 1 , Kashiwa, Chiba 277-8581, Japan
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- K. Yaji
- Center for Basic Research on Materials, National Institute for Materials Science (NIMS) 5 , Tsukuba, Ibaraki 305-0003, Japan
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- M. Fujisawa
- Institute for Solid State Physics (ISSP), The University of Tokyo 1 , Kashiwa, Chiba 277-8581, Japan
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- S. Shin
- Office of University Professor, The University of Tokyo 6 , Chiba 277-8581, Japan
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- F. Komori
- Institute for Solid State Physics (ISSP), The University of Tokyo 1 , Kashiwa, Chiba 277-8581, Japan
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- Y. Kobayashi
- Institute for Solid State Physics (ISSP), The University of Tokyo 1 , Kashiwa, Chiba 277-8581, Japan
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- Takeshi Kondo
- Institute for Solid State Physics (ISSP), The University of Tokyo 1 , Kashiwa, Chiba 277-8581, Japan
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説明
<jats:p>We describe a setup of time-, spin-, and angle-resolved photoemission spectroscopy (tr-SARPES) employing a 10.7 eV (λ = 115.6 nm) pulse laser at a 1 MHz repetition rate as a probe photon source. This equipment effectively combines the technologies of a high-power Yb:fiber laser, ultraviolet-driven harmonic generation in Xe gas, and a SARPES apparatus equipped with very-low-energy-electron-diffraction spin detectors. A high repetition rate (1 MHz) of the probe laser allows experiments with the photoemission space-charge effects significantly reduced, despite a high flux of 1013 photons/s on the sample. The relatively high photon energy (10.7 eV) also brings the capability of observing a wide momentum range that covers the entire Brillouin zone of many materials while ensuring high momentum resolution. The experimental setup overcomes the low efficiency of spin-resolved measurements, which gets even more severe for the pump-probed unoccupied states, and affords the opportunity to investigate ultrafast electron and spin dynamics of modern quantum materials with energy and time resolutions of 25 meV and 360 fs, respectively.</jats:p>
収録刊行物
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- Review of Scientific Instruments
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Review of Scientific Instruments 94 (8), 2023-08-01
AIP Publishing
