Participaint: Aritomi and Yuhang

We decide to change the position of OPO transmission PBS because of the space limitation. We also put the ''flip'' mirror on the translation stage. By moving this mirror, we will switch its direction to homodyne or to filter cavity. The scheme now is to use the two steering mirror before this ''filp'' mirror to do alignment for filter cavity. And adjust this ''flip'' mirror to align the beam into homodyne. Because this ''filp'' mirror has three adjustable knobs.

According to the design shown in the first attached figure, we aligned the BAB into AMC. However, the matching is not as good as LO.

From all the peak values, we can compute the matching is (0.51-0.0065)/((0.0115+0.0153+0.0173-0.0065*3)+0.51-0.0065) = 95.34%

We didn't see the visibility and found out the reason is we forgot to convert BAB into P-pol.