Fig. 1: Losses in a microresonator and typical intrinsic Q factors.
From: Boosting silica micro-rod Q factor to 8.28 × 109 for fully stabilizing a soliton microcomb
a Illustration of the losses in a microcavity, including radiation & scattering loss, material absorption loss and contaminant loss. b Images of our fused silica microrod cavity, embedded within the 3-mm-diameter fiber preform. Here we also show the scanning electron microscope (SEM) images of microrod resonator. c Theoretical and measured Q0 of state-of-the-art microcavities in diverse material platform. d Measured Q0 of different silica microcavities.
