Absolute frequency measurement of the $6s^2~^1S_0 \to 6s6p~^3P_1$ $F=3/2\to F'=5/2$ $^{\text{201}}$Hg transition with background-free saturation spectroscopy. (arXiv:2211.09197v1 [physics.atom-ph]) http://arxiv.org/abs/2211.09197
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