We measured the Finesse of green mode cleaner (while p-pol and s-pol)

For s-pol, the measurement is fine. But for p-pol, the main peak overlaps with sidebands, as you can see in the attached figure 2. I take only the central part of data to do fit to avoid the influence of sideband. The result is listed as following.

For s-pol, the Finesse is 300

For p-pol, the Finesse is 36.7