Michael and Yuhang

In the past two days, we have been setting up AOM for switching off OPO injection beam fastly. A 'AA.MT110 IR 27' was used to provide the first Brag diffraction. According to specification, about 1 degree (lambda*f/2/v) Brag angle is required. Now, a newport pure rotation stage is used to adjust AOM. Using the current rotation stage, we could achieve efficiency of only 6%. Of course, the RF signal power could provide some limitation considering we can provide up to 20dBm now.

But anyway, we would need to replace it with newport alignment stage 9071 to better align AOM. We would need a high-power RF amplifier for providing higher RF signal level. Since bandwidth of 110MHz is not small, the bandwidth requirement needs to pay attention as well.