Collimated UV light generation by two-photon excitation to a Rydberg state in Rb vapor

Mark Lam, Sambit B. Pal, Thibault Vogt +3

We use two continuous-wave (CW) laser beams of 780 nm and 515 nm to optically drive ${}^{85}$Rb atoms in a heated vapor cell to a low-lying Rydberg state 10D${}_{5/2}$. We observe a co…