Tunable VUV frequency comb for 229m Th nuclear spectroscopy

Laser spectroscopy of the Th nuclear clock transition is necessary for the future construction of a nuclear-based optical clock. Precision laser sources with broad spectral coverage in the vacuum ultraviolet are needed for this task. Here, we present a tunable vacuum-ultraviolet frequency comb based...

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Bibliographic Details
Published in:Optics letters 2022-11, Vol.47 (21), p.5591
Main Authors: Zhang, Chuankun, Li, Peng, Jiang, Jie, von der Wense, Lars, Doyle, John F, Fermann, Martin E, Ye, Jun
Format: Article
Language:English
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Summary:Laser spectroscopy of the Th nuclear clock transition is necessary for the future construction of a nuclear-based optical clock. Precision laser sources with broad spectral coverage in the vacuum ultraviolet are needed for this task. Here, we present a tunable vacuum-ultraviolet frequency comb based on cavity-enhanced seventh-harmonic generation. Its tunable spectrum covers the current uncertainty range of the Th nuclear clock transition.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.473006