Yuhang and Pierre

We tune the servo for locking the coherent control loops.

For green coherent control, we use 20dB attenuator and 50Om for error in. The measured open loop transfer function is attached as figure 1. We have unity gain frequency of 85Hz.

For local oscillator coherent control, we use 30dB attenuator and 50Om for error in. The measured open loop transfer function is attached as figure 2. We have unity gain frequency of 51Hz.