Last entry about OPO alignment is done with the transmission of OPO seperated by normal 50:50 BS. Today I replaced it with a BSY11(dichroic mirror reflects infrared). The first time we align OPO with a temperature of 6.740kOm, but now I found I cannot find green with this tempereture. So I did a scan of temperature, I found green transmission in another temperature. The temperature now is 7.198kOm. (See attached picture 1)This is a roughly fine value, we will find the best value after the lock of OPO. See attached picture 2 of the green I found. And picture 3 of it on the screen. I check the value of infrared transmission again today, which is around 0.4mW. It is similar with last week's condition.