Figure 4: Absolute frequency measurement results.
From: Precision spectroscopy by photon-recoil signal amplification
(a) Compilation of absolute frequency measurements performed using the two-point sampling technique. The dotted black and dashed green lines give the 68.3% prediction bounds for the measurement and the mean, respectively. (b) Allan deviation of the combined data set. A fit gives an instability of σy(τ)=5.1 × 10−9
. The error bars indicate the s.d. of the mean.
