The NPRO at the PSL table still can generate 2W laser ! He is still alive.
When I reduced the temperature to 25 deg, the output power increased to 2W successfully.
As Steve wrote down in his last entry (see here), the NPRO output was at 1.6 W currently, which is supposed to be 2W.
We were suspicious about the laser crystal's temperature because the current temperature looks a bit high.
In fact the setpoint of the temperature was 45.9 deg instead of 25 deg that is the previous setpoint.