VolkerQ, RickS

Today we went to Xend and aligned the AOM.

The transmitter module is #1x.

We adjusted the max RF power delivered to the AOM to be 1.3 W.

The total power transmitter through the AOM was 1.44 W; power in the diffracted beam 1.13 W -> 78% diffraction efficiency (about right).

We installed the Polarizing Beam Splitter Cube downstream of the AOM.

Installed NE01A-B filter in front of OFS PD.  -> 9.0 V at max power.

Adjusted for Max modulation.

Power incident on the OFS PD 1.34 mW.

Power incicent on the Tx PD 6.75 mW.

s-pol light reflected from PBSC 10-15 mW

Closed OFS loop with offset at 4.5 V.

Adjusted bias on AOM driver to minimize AOM drive with loop locked.