@article{12902, keywords = {Atomic and Molecular Physics, and Optics}, author = {Chuankun Zhang and Peng Li and Jie Jiang and Lars von der Wense and John Doyle and Martin Fermann and Jun Ye}, title = {Tunable VUV frequency comb for 229mTh nuclear spectroscopy}, 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 = {2022}, journal = {Optics Letters}, volume = {47}, pages = {5591}, month = {2022-11}, publisher = {Optica Publishing Group}, issn = {0146-9592, 1539-4794}, doi = {10.1364/ol.473006}, }