Absorption, fluorescence and EIT processes in the extremely thin cell filled with Rb and buffer gas neon

International audienceComparison of the absorption and fluorescence in the nanocell (or so called extremely thin cell) filled with pure Rb with another one filled with Rb and Neon gas is provided. The effect of the collapse and revival of Dicke-type narrowing is still observable for thickness L=lambda/2, and lambda, where lambda , is a resonant laser wavelength either 780 nm, or 795 nm (for Rb, D2 or D1 line). For L= so called velocity selective optical pumping (VSOP) resonance located at the atomic transition is still observable, while the linewidth is increased by 4 times in comparison with that obtained in the pure Rb nanocell. Comparison with the theory is presented. Electromagnetically Induced Transparency effect detected in the nanocell filled with Rb and Neon gas is presented. The EIT resonance linewidth is of 12 MHz when L~ 1 µm, while for the nanocell filled with pure Rb linewidth is ~9 MHz