Hyperfine constants and line separations for the ${}^1{S}_0-{}^3{P}_1$ intercombination line in neutral ytterbium with sub-Doppler resolution

Peggy E. Atkinson, Jesse S. Schelfhout, John J. McFerran

Optical frequency measurements of the intercombination line $(6s^2){}^1{S}_0-(6s6p){}^3{P}_1$ in the isotopes of ytterbium are carried out with the use of sub-Doppler fluore…