You may want to start with the theory using these topics.
https://optics.ansys.com/hc/en-us/articles/360041611774-Quality-factor-calculations-for-a-resonant-cavity
https://optics.ansys.com/hc/en-us/articles/360042088353-Whispering-gallery-modes-of-a-microdisk
Because these whispering gallery modes have such high Q coupling to them mmay be a challenge.
You are navigating away from the AIS Discovery experience