Fig. 3: Amplitude variation within the synchronization range.
From: Amplitude stabilization in a synchronized nonlinear nanomechanical oscillator
As the drive \({F}_{{{{{{\rm{osc}}}}}}}\) is changed, the ratio between the perturbation and the drive \({F}_{{{{{{\rm{e}}}}}}}/{F}_{{{{{{\rm{osc}}}}}}}\) is kept at a constant level of 10%. The amplitude is normalized to that of the free-running oscillator for the same drive (\(X/{X}_{0}\)). The phase delay induced by the frequency detuning leads to an amplitude variation (a: experimental results, b: model). c Cross-section of panel (a, b) along \({\delta }{f}=0\), where the amplitude drops towards the free-running oscillator amplitude as the nonlinearity increases (line: theory, dots: experiment). d Cross-sections of panels (a, b) along different drive levels near zero detuning, where the amplitude variation changes from parabolic to linear with a decreasing slope. Measurement errors mainly arise from frequency drifts on the order of 20 Hz, close to the distance between two consecutive points.
