Journal Article

PUBDB-2025-02445

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Lasing of a cavity-based X-ray source

Rauer, P. (Corresponding author)XFEL.EU*DESY* ; Bahns, I.Extern*XFEL.EU* ; Friedrich, B.XFEL.EU* ; Casalbuoni, S.XFEL.EU* ; Di Felice, M.XFEL.EU* ; Dommach, M.XFEL.EU* ; Freijo Martin, I. ; Freund, W.XFEL.EU* ; Grünert, J.XFEL.EU* ; Guetg, M.XFEL.EU*DESY* ; Karpics, I.XFEL.EU* ; Karabekyan, S.XFEL.EU* ; Koch, A.Extern*XFEL.EU* ; Kujala, N.XFEL.EU* ; La Civita, D.XFEL.EU* ; Liu, J.XFEL.EU* ; Maltezopoulos, T.XFEL.EU* ; Makita, M.XFEL.EU* ; Mayet, F.Extern*DESY* ; Müller, L.DESY* ; Rio, B.XFEL.EU* ; Samoylova, L.XFEL.EU* ; Schmidtchen, S.XFEL.EU* ; Scholz, M.DESY* ; Silenzi, A.XFEL.EU* ; Strauch, V.XFEL.EU* ; Thoden, D.DESY* ; Wohlenberg, T.DESY* ; Vannoni, M.XFEL.EU* ; Yang, F.XFEL.EU* ; Decking, W.XFEL.EU*DESY* ; Rossbach, J.CFEL*Extern* ; Sinn, H.XFEL.EU*

2026
Nature Publ. Group London [u.a.]

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Please use a persistent id in citations: doi:10.1038/s41586-025-10025-x  doi:10.3204/PUBDB-2025-02445

Abstract: Cavity-based X-ray Free Electron Lasers (CBXFELs) promise to transform thefield of hard X-ray science by delivering laser-like radiation with exceptional bril-liance, stability, and full three-dimensional coherence. At the European XFEL,we have constructed a proof-of-concept CBXFEL featuring a 133 m round-triphard X-ray cavity using diamond Bragg crystals. Here, we report the first las-ing with multi-pass gain in an X-ray cavity, marking a major milestone for thefield. Our results establish the feasibility of CBXFELs and open the door tonext-generation X-ray sources with unprecedented spectral purity and stability.

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Contributing Institute(s):

1. Koordination des XFEL-Beschleunigers (MXL)
2. X-Ray Optics (XFEL_DO_ID_XRO)
3. Instrumentation Department (XFEL_DO_ID)
4. X-Ray Photon Diagnostics (XFEL_DO_ID_XPD)
5. Vakuumsysteme (MVS)
6. Undulator Systems (XFEL_DO_ID_UND)
7. Vacuum (XFEL_DO_ID_VAC)
8. Diagnose und Instrumentierung (MDI)
9. Mechanical Engineering (XFEL_DO_ID_ME)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)
2. 6G13 - Accelerator of European XFEL (POF4-6G13) (POF4-6G13)

Experiment(s):

1. Facility (machine) XFEL

Appears in the scientific report 2026

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Database coverage:
; ; ; BIOSIS Previews ; Biological Abstracts ; Chemical Reactions ; Clarivate Analytics Master Journal List ; Current Contents - Agriculture, Biology and Environmental Sciences ; Current Contents - Life Sciences ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Nature ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 60 ; Index Chemicus ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection ; Zoological Record

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