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arXiv · 2208.06337

Tunable VUV Frequency Comb for $^{\mathrm{229m}}$Th Nuclear Spectroscopy

Chuankun Zhang·Peng Li·Jie Jiang·Lars von der Wense·John F. Doyle·Martin E. Fermann·Jun Ye
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Abstract

Laser spectroscopy of the $^{\mathrm{229m}}$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 $^{\mathrm{229m}}$Th nuclear clock transition.

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Chuankun Zhang, Peng Li, Jie Jiang, Lars von der Wense, John F. Doyle, Martin E. Fermann, Jun Ye. 2022-10-24. Tunable VUV Frequency Comb for $^{\mathrm{229m}}$Th Nuclear Spectroscopy. https://doi.org/10.1364/ol.473006

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