Sheila, Camilla
We had wanted to turn down the CLF launch power to see if ti had any effect on SQZ noise, but couldn't turn down by a factor of 2. Could only reduce from 0.06 to 0.05. We instead we doubled CLF launch from 0.06 to 0.12mW. Note these numbers were when the OPO was unlocked and the CLF launched changed once it was locked.
| Nominal | Temp. Test | Note | |
| CLF Launch (OPO unlocked) | 0.06 | 0.12 | Changed with Waveplate |
| CLF Launch (OPO locked) | 0.07 | 0.095 | |
| RF6 Demod | -10 | 0 | This looked noisy in test, why? |
| CLF loop gain | 0 | -6 | |
| LO loop gain | -12 | -15 | |
| FC LSC | -1.12 | -0.566 | In sqzparams.py |
| FC ASC | -0.03 | -0.015 | |
| CLF ISS loop gain | 23 | 17 | From CLF AOM medm button |
| CLF ISS setpoint | 0.347 | 0.694 |
After changing the settings attached, ran scan_sqz_ang which only changed angle by 2deg. I don't see any extra noise at low frequeuncy. See attached, SQZ was a little worse at high frequency with the higher CLF. Not that the CLF RF6 was noisy, so maybe something was setup incorrectly.
To relock in the nominal settings, I had to realign ZM3 as the FC ASC had moved this away after the test when the SQZ was taken down, unsure why, maybe the way that I changed the ASC settings.
