Accurate spectroscopy of Sr atoms

Irene Courtillot, Audrey Quessada-Vial, Anders Brusch +3

We report the frequency measurement with an accuracy in the 100 kHz range of several optical transitions of atomic Sr : ${}^1{S}_0{-}^3{P}_1$ at 689 nm, ${}^3{P}_1{-}^3{S}_1$ at 688 nm and $^3P_…