YuhangZhao - 22:14, Wednesday 20 December 2017 (614)
Locking of filter cavity again
After the installation of shield case and step around, we reconnect the cable. This cause the beam goes away. Now we can lock it again like figure 1.
While I check the first iris, I find the pattern on it is really similar with the pattern we get from infrared. So I think the problem should come from the bench. Refer to figure 2.
But the locking is not stable enough, I will check the phase of two signals sending to EOM. Refer to figure 3.
While I check the first iris, I find the pattern on it is really similar with the pattern we get from infrared. So I think the problem should come from the bench. Refer to figure 2.
But the locking is not stable enough, I will check the phase of two signals sending to EOM. Refer to figure 3.
Images attached to this report
