Absolute frequency measurement of the $6s^2{}^1{S}_0\to 6s6p{}^3{P}_1$ $F=3/2\to F^{\prime }=5/2$ ${}^{\text{201}}$Hg transition with background-free saturation spectroscopy

Adam Linek, Piotr Morzyński, Marcin Witkowski

We report the development of a method for eliminating background-induced systematic shifts affecting precise measurements of saturation absorption signals. With this technique, we…