Recent Progress in Spectroscopies Using Soft X-ray Free-electron Lasers

Novel light sources have been new probes or “eyes” to develop our science and technology. Soft X-ray free-electron lasers (SXFELs) are an ultrahigh brilliant soft X-ray source with ultrashort pulse-width, ultrahigh spatial coherence, and tunability of photon energy. Various experimental techniques a...

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Bibliographic Details
Published in:Chemistry letters 2021-07, Vol.50 (7), p.1336-1344
Main Authors: Matsuda, Iwao, Kubota, Yuya
Format: Article
Language:English
Subjects:
Coherence
Electron states
Femtosecond pulses
Free electron lasers
Light sources
Materials selection
Optical properties
Photoelectrons
Photons
Pulse duration
Soft x rays
Spectrum analysis
Spin dynamics
Vol. 50 Commemorative Highlight Review: Analytical Chemistry
Vol. 50 Commemorative Highlight Review: Physical Chemistry
X ray sources
X-ray spectroscopy
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Summary:Novel light sources have been new probes or “eyes” to develop our science and technology. Soft X-ray free-electron lasers (SXFELs) are an ultrahigh brilliant soft X-ray source with ultrashort pulse-width, ultrahigh spatial coherence, and tunability of photon energy. Various experimental techniques are designed and examined with SXFEL. In this review, we focus on soft X-ray spectroscopies, such as magneto-optical spectroscopy, photoelectron spectroscopy, and non-linear spectroscopy, that were successfully developed at SXFEL beamlines of vacuum ultraviolet ∼ soft X-ray photons. These techniques allow us to track femtosecond dynamics of spins and carriers in materials element-selectively or to examine electronic states with broken inversion symmetry. The SXFEL spectroscopies have become new tools to tackle with a wide range of our scientific and technical problems.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.200881