Reports until 10:00, Tuesday 03 October 2023
H1 SQZ
camilla.compton@LIGO.ORG - posted 10:00, Tuesday 03 October 2023 (73227)
Realigned the SQZ Pump Fiber Polarization

Oli, Vicky, Camilla

Since Naoki and I adjusted the SHG AOM and fiber alignment last week 73118, the HAM7 H1:SQZ-SHG_FIBR_REJECTED_DC_POWER is saturated.  Oli reduced the rejected power using the two pico waveplates on the SQZT0 SHG to OPO path. Started by maximizing OPO transmission with opo in LOCKED CLF DUAL NO ISS until the SHG_FIBR_REJECTED wasn't saturated. Reduced SHG_FIBR_REJECTED from 0.7 to 0.03mW. 

Images attached to this report