R&D (FilterCavity)
MarcEisenmann - 13:43, Monday 10 April 2023 (3224)
FIS measurement with various pump power

[Marc, Michael, Yuhang]

We measured FIS with various green power as reported in figure 1.

However, one issue was that CC1 and CC2 error signal were extremely glitchy with every few seconds a huge increase in their levels.

Note that to speed up the FIS recovery we did not tune too carefully the various servo gain.

We will do it soon and also investigate PLL phase noise.

We suspect this is the reason why we can not see improvement on the phase-noise (fig2).

Images attached to this report
3224_20230410064229_fis.png 3224_20230410064234_sqzasqz.png