Fig. 3

Rb SB results. (a) A model of time domain resonance that shows a symmetric line shape while in (b) the frequency domain model shows rapid passage in one direction. (c) The experimental time domain amplitude and (e) phase spectra of Rb atoms in blue, and the residuals (× 5) in yellow. The frequency domain (d) amplitude and (f) phase spectra in blue, the models in red and unscaled residuals in yellow.