Coherent Population Trapping Resonances in Cs Atomic Vapor Layers of Micrometric Thickness
Figure 4
CPT bright resonance sign reversal with laser power density observed on the D2 line of Cs at the set of hyperfine transitions. Thin cell with and T = 34°C; CPT resonance profile (a) presented in absolute absorption scale; (b) zoomed-in arbitrary absorption units.