Figure 3: Attractor diagram for nonlinear optomechanical motion [41]. Stable self-sustained oscillations occur when the average power $Prad$ fed into the mechanical motion by the radiation pressure equals the power $Pfric$ dissipated through friction. Their ratio depends on the amplitude $A$ of mirror motion (plotted in terms of the width of the optical resonance, $xFWHM$), and on the detuning between laser and optical resonance, as well as the input power (fixed in this plot).