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NaokiAritomi - 21:41, Friday 16 July 2021 (2627)Get code to link to this report
OPO automatic lock doesn't work

[Aritomi, Yuhang]

Today we found that OPO automatic lock doesn't work. The reason was that OPO somehow cannot be scanned automatically with servo. For the moment, we locked OPO manually. We checked the UGF of the manual OPO lock and it was 4kHz.

We also found that current of p pol laser was not optimal value and the mode hop appeared in the OPO p pol transmission. We brought the current to the optimal value and the mode hop disappeared.

Comments related to this report
NaokiAritomi - 17:50, Monday 26 July 2021 (2637)

OPO automatic lock recovered by itself.

NaokiAritomi - 19:18, Thursday 29 July 2021 (2643)

OPO automatic lock doesn't work again...