TY  - JOUR
AU  - Rauer, Patrick
AU  - Bahns, Immo
AU  - Friedrich, Bertram
AU  - Casalbuoni, Sara
AU  - Di Felice, Massimiliano
AU  - Dommach, Martin
AU  - Freijo Martin, Idoia
AU  - Freund, Wolfgang
AU  - Grünert, Jan
AU  - Guetg, Marc
AU  - Karpics, Ivars
AU  - Karabekyan, Suren
AU  - Koch, Andreas
AU  - Kujala, Naresh
AU  - La Civita, Daniele
AU  - Liu, Jia
AU  - Maltezopoulos, Theophilos
AU  - Makita, Mikako
AU  - Mayet, Frank
AU  - Müller, Lukas
AU  - Rio, Benoit
AU  - Samoylova, Liubov
AU  - Schmidtchen, Silja
AU  - Scholz, Matthias
AU  - Silenzi, Alessandro
AU  - Strauch, Vivienne
AU  - Thoden, Daniel
AU  - Wohlenberg, Torsten
AU  - Vannoni, Maurizio
AU  - Yang, Fan
AU  - Decking, Winfried
AU  - Rossbach, Joerg
AU  - Sinn, Harald
TI  - Lasing of a cavity-based X-ray source
JO  - Nature
VL  - -
SN  - 0028-0836
CY  - London [u.a.]
PB  - Nature Publ. Group
M1  - PUBDB-2025-02445
SP  - -
PY  - 2026
AB  - 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.
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1038/s41586-025-10025-x
UR  - https://bib-pubdb1.desy.de/record/633844
ER  -