Updated notes from incorrect 73801 SQZ NLG instructions
To measure amplified signal for NLG:
- SQZ_MANAGER to LOCKED_SEED_NLG (this locks the OPO on dual green + seed IR resonance, starts the SEED_PZT scanning, misaligns FC)
- Adjust temperature to maximize the H1: SQZ-OPO_IR_PD_LF_OUT signal.
- Measure the max as your amplified signal.
To measure unampilifed signal for NLG:
- SQZ_MANAGER to NO_SQUEEZING and SQZ_OPO to DOWN,
- Block the green beam via H1:SQZ-SHG_FIBR_FLIPPER_CONTROL
- Scan the OPO PZT with PZT_1 Enable, Use trigger: No (via SQZ Overview > HAM7 > OPO IR > OPO PZT1)
- Should see mode scan on H1: SQZ-OPO_IR_PD_LF_OUT. Measure the highest peak as "Unamplified" and the zero level as "Unamplified Dark Offset".
- Only need to this once (we did at start and end)
Calculation for NLG:
-
Can now calculate NLG = Amplified / (Unamplified - Unamplified Dark Offset).
-
SQZ_MANAGER to SQZ_READY_IFO (will swap back from SEED to CLF)
-
SQZ_FC to IR_FOUND (so SQZ_MANGER doesn't ignore FC)