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. 2015 Sep 18;6:8104. doi: 10.1038/ncomms9104

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(a) Line scans of the SE emission rate (dashed, black line) and theoretically expected backaction rate Γ_ba=Γ_eff–Γ_M (straight, red line) obtained at the longitudinal position y_p=40 μm. The grey zone represents the parametric instability region13, where the dynamical backaction cancels the intrinsic mechanical damping rate. Dots with abscissa (b–e) emphasize the values taken by I_SE and Γ_ba at the four acquisition spots. Heating and cooling regions are represented in red and blue on the SEM slice. Right panel: the SE emission rate fluctuation spectrum is measured at transverse positions x_p (b–e). The straight lines are Lorentzian adjustments to the experimental data.