ArticleProceedings of the National Academy of Sciences of the United States of America2022
Generation of intense phase-stable femtosecond hard X-ray pulse pairs.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Simultaneous lasing of Ni Kα and Cu Kα lasers from an alloy foil irradiated with an intense X-ray free-electron laser pulse.Journal of synchrotron radiation · 2026Article
- Article
- Development of portable nanofocusing optics for X-ray free-electron laser pulses.Journal of synchrotron radiation · 2025Article
- Seeded stimulated X-ray emission at 5.9 keV.Optica · 2023Article
- A perfect X-ray beam splitter and its applications to time-domain interferometry and quantum optics exploiting free-electron lasers.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
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Authors and funding
27 authors.
Funding
Abstract
Coherent nonlinear spectroscopies and imaging in the X-ray domain provide direct insight into the coupled motions of electrons and nuclei with resolution on the electronic length scale and timescale. The experimental realization of such techniques will strongly benefit from access to intense, coherent pairs of femtosecond X-ray pulses. We have observed phase-stable X-ray pulse pairs containing more than 3 × 107 photons at 5.9 keV (2.1 Å) with ∼1 fs duration and 2 to 5 fs separation. The highly directional pulse pairs are manifested by interference fringes in the superfluorescent and seeded stimulated manganese Kα emission induced by an X-ray free-electron laser. The fringes constitute the time-frequency X-ray analog of Young’s double-slit interference, allowing for frequency domain X-ray measurements with attosecond time resolution.
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