nutsinee.kijbunchoo@LIGO.ORG - posted 19:40, Tuesday 26 February 2019 (47145)
Glan-Laser Calcite Polarizer installed in CLF path
An attempt to address acoustic peaks in DARM that comes from CLF somehow. This is to ensure only the correct polarization from the AOM continues to the coupler (cube --> half waveplate --> cube). I tweaked the alignment to get the transmission back around where it used to be (~80%).
Images attached to this report
