Tunable VUV frequency comb for 229mTh nuclear spectroscopy

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Abstract

Laser spectroscopy of the 229mTh 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 229mTh nuclear clock transition.

Year of Publication
2022
Date Published
2022-11
Journal Title
Optics Letters
Volume
47
Issue
21
Start Page or Article ID
5591
ISSN Number
0146-9592, 1539-4794
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