Directional THz generation in hot Rb vapor excited to a Rydberg state

Mark Lam, Sambit B. Pal, Thibault Vogt +2

We optically excite ${}^{85}$Rb atoms in a heated vapor cell to a low-lying Rydberg state 10D${}_{5/2}$ and observe directional terahertz (THz) beams at 3.3 THz and 7.8 THz. These THz…