I have been rebuilding the entire optical setup over the past two weeks to make some fundamental changes and fix some things.
Still have to modify the transmission path, I found that the beam is much too large on the beat PD, which causes a lot of scattering off the shiny rim.
Attachment 1 is an overview of the new layout and attachment 2 shows the west AOM transfer function from commercial driver modulation input to laser intensity, measured by a PDA10CF. I aligned the AOMs to give maximum deflection while minimizing RFAM at 35 MHz, their mod frequency. The East path ended up with a lot more phase delay this way because i had to move it further from the transducer. Deflection efficiency is in both cases about 80% at AOM saturation.