nutsinee.kijbunchoo@LIGO.ORG - posted 18:16, Wednesday 12 April 2023 (68632)
An unamplified diode added to pre-SHG input path
Vicky Naoki Nutsinee
We borrowed a FCGS REFL Rejected diode from the SQZT7 and placed it at the transmission of a PBS cube before SHG faraday isolator. This is to monitor the polarization drift and the SHG input power. We swear it's temporary. The diode is hooked up to SQZ-SPARE_A_DC channel. There's a stack of ND1 and ND 0.6 infront of the diode.
Images attached to this report
