Fig. 6: Comparison of the measured and predicted Q-factor spectrum.
From: A mid-infrared Brillouin laser using ultra-high-Q on-chip resonators
The total Q-factor (Qtot) was predicted by adding its individually calculated loss components, namely SiO2 absorption \((\propto 1/{Q}_{{silica}})\), roughness scattering \((\propto 1/{Q}_{{scatt}})\), and absorption from surface-adsorbed water \((\propto 1/{Q}_{{water}})\), and taking its inverse. The Qmeas values and the used resonator are the same as those in Fig. 3a and b.
