Conclusion: Good. First contact did not damage the coating surface, and reduced the loss
- Construct a cavity with A1 and C2
- Measure the transmission and FWHM (of TEM10 mode)
- Apply First Contact on both mirrors
- Measure the values again
Transmission:
2.66 +/- 0.01 V -> 2.83 +/- 0.01 V
==> 6.3% +/- 0.5 % increase
FWHM of TEM10:
Before: (66.1067, 65.4257, 66.1746) +/- (0.40178, 0.38366, 0.47213) [kHz]
After: (60.846, 63.4461, 63.7906) +/- (0.43905, 0.56538, 0.51756) [kHz]
==> 5.1% +/- 2.7% decrease
Question: What is the best way to measure the finesse of the cavity? |