KAGRA MIR (Polarization)
MarcEisenmann - 14:20, Monday 11 July 2022 (3025)
Comment to Measurement of losses as a function of mirror rotation (Click here to view original report: 3020)

We did measurement with input polarization angles of 0 deg, 15 deg and 30 deg.

We computed delta n and theta from them.

Especially, we found that theta = 1.6 deg in the center of the mirror.

This is exactly the value we expected from the HWP rotation angle.

We will use this rotation of the mirror for the polishing.

Images attached to this comment
3025_20220711072052_finalrotdntheta.png