Kiwamu, Michael R

We increased the power going into the ref cav to get more light into the ALS fiber pick off. We now have about 23 mW going in. We ran a transfer function and found a lot of noise around 380 kHz, very close to the UGF. To get rid of this we decreased the common gain to 2 dB, giving a gain margin of 2dB. The UGF is now at 200 kHz.

Additionally, the PD in transmission of the ref cav was saturating, so I put an ND 0.3 filter infront of it. This was the lowest one I could find, and it is now reading ~ 3V.