KAGRA MIR (Polarization)
MarcEisenmann - 18:17, Tuesday 31 May 2022 (2970)
start of AZTEC #3 birefringence measurement

Marc, Matteo

We installed the AZTEC #3 on the translation stage.

We tuned the input laser power to have better SNR on the PSDs.

With about 2 mW power and 3 dB attenuator before the lockin amplifier we are roughly at half the PSDs saturation and about 0.6 V in the lockin-amplifier (saturation at 1 V).

Measurements on-going (one map is 5h40 and we need at least 6)