Simultaneous lasing of Ni <i>K</i> α and Cu <i>K</i> α lasers from an alloy foil irradiated with an intense X-ray free-electron laser pulse
We report the simultaneous lasing of two distinct Kα emissions at photon energies of 7.48 keV (Ni Kα<sub>1</sub>) and 8.05 keV (Cu Kα<sub>1</sub>). This was achieved by a population inversion induced through intense X-ray free-electron laser (XFEL) irradiation of a Cu-Ni alloy foil. This demonstration of multi-color X-ray lasing using a single XFEL source is expected to contribute significantly to the future development of X-ray lasers and their applications.
Authors
- Y. Inubushi
- Kubota Yuya
- Gota Yamaguchi (ORCID: https://orcid.org/0000-0003-4305-807X)
- Jumpei Yamada (ORCID: https://orcid.org/0000-0001-9322-1440)
- T Osaka
- Ichiro Inoue
- Makina Yabashi
Institutions
- SPring-8 (JP)
- Japan Synchrotron Radiation Research Institute (JP)
Publication Details
- Journal
- Journal of Synchrotron Radiation
- Published
- 2026-01-02
- DOI
- https://doi.org/10.1107/s1600577525010914
- Primary Topic
- Laser-Plasma Interactions and Diagnostics
- Type
- article
- Field-Weighted Citation Impact
- 0.00