Fig. 3: Sensitivity of the clock “43” and “32” transitions and synthetic frequency to the bias magnetic field value. | Nature Communications

Fig. 3: Sensitivity of the clock “43” and “32” transitions and synthetic frequency to the bias magnetic field value.

From: Simultaneous bicolor interrogation in thulium optical clock providing very low systematic frequency shifts

Fig. 3

a Frequency shifts Δν43 and Δν32 as a function of the “main” bias magnetic field \({B}_{0}^{{{{{{{{\rm{m}}}}}}}}}\) at a fixed value of the “reference” field of \({B}_{0}^{{{{{{{{\rm{r}}}}}}}}}=218\) mG. Solid lines are parabolic fits to the data. b Fit residuals. The synthetic frequency shift Δνs is shown in (c). The shaded area indicates the 1σ = 0.175 Hz G−2 uncertainty of the quadratic Zeeman coefficient. Error bars correspond to 1 s.d. statistical uncertainty.

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