Figure 4
The dependence of fields H\(_{dn}\) and H\(_{up}\) in units of field shift divided by the line broadening (\(\Delta H_0\)) as it described in33 for a single oscillator and a microscopic sample (open symbols). We use this picture to show the principal difference with our results. The parameter \(h_{ef}^2\) is used, which is proportional to the pumping power as a fitting for field H\(_{dn}\) (filled symbols). It is clearly seen that the field H\(_{up}\) has a much larger shift from the resonance field than what follows from the theory of a single nonlinear oscillator.
