Figure 3: Dependence of absorption properties on laser parameters.
The contrast was measured as a function of laser detuning (a) and incident intensity (b) with the other parameter fixed near its optimum value (indicated by dashed vertical lines at −8 MHz and 570 W m−2 on the alternate graphs). At 0 MHz detuning (rightmost point in (a)) laser cooling ceased and the ion was not detectable until recooled. (c) Total power absorbed by the ion as a function of the incident power on the maximum scattering cross-section σ0. Dashed horizontal line is the theoretical maximum power absorption Pmax=hc/(2λτ). Solid line is the linear extrapolation of the fit at low intensity. Each data point is obtained by fitting to a single image with error bars from the 1 σ statistical uncertainty in the fit.
