Fig. 3: Lamb-dip center frequency vs helium flux.
From: Absolute frequency metrology of buffer-gas-cooled molecular spectra at 1 kHz accuracy level
Line-center frequency (main frame) and FWHM (inset) of the saturation dip as a function of fHe, for fAc = 3 SCCM and PSCAR = 40 μW. The error bars represent the statistical uncertainty (1-standard deviation) from the Lorentzian fit to the dip saturation profile.
