camilla.compton@LIGO.ORG - posted 10:14, Wednesday 26 March 2025 (83569)
SQZ FIS SRC Detuning Data set
Reduced HAM7 rejected pump power and increased SHG launch, turned OPO trans setpoint up to 120uW and measured NLG with 76542 to be 58 (this was a little lower than with 120uW in 83370).
Data attached with filename shown on screenshot.
| Type | Time (UTC) | SRCL | Angle | DTT Ref |
| No SQZ | 16:01:00 - 16:15:00 | N/A | N/A | ref 0 |
| FIS | 16:20:30 - 16:23:30 | -191 | (CLF-) 174 | ref1 |
| FIS | 16:27:30 - 16:30:30 | -90 | (CLF-) 218 | ref2 |
| FIS | 16:35:00 - 16:38:00 | 0 | (CLF+) 107 | ref3 |
| FIS | 16:42:00 - 16:45:00 | -290 | (CLF-) 146 | ref4 |
| FIS | 16:48:00 - 16:51:00 | -390 | (CLF-) 129 | ref5 |
Note that I left the OPO servo gain at -8, but we have previously used -12dB for 120uW OPO trans (83370)
| opo_grTrans_ setpoint_uW | Amplified Max | Amplified Min | UnAmp | Dark | NLG (usual) | NLG (maxmin) | OPO Gain |
| 120 | 0.0540944 | 0.00026378 | 0.000913452 | -0.0000233 | 57.75 | 58.68 | -8 |
Images attached to this report
