Sub-Doppler cooling of sodium atoms in gray molasses

Giacomo Colzi, Gianmaria Durastante, Eleonora Fava +3

We report on the realization of sub-Doppler laser cooling of sodium atoms in gray molasses using the D1 optical transition ($3s{}^2{S}_{1/2}\to 3p{}^2{P}_{1/2}$) at 589.8 nm…