Attached is a plot of the powers into and out of the green fiber, in the time since the pump down of HAM6.
The top panel shows the powers launched into the fiber, the rejected power (power in the wrong polarization which is rejected by a PBS right after the colimator on the OPO platform) and the power on the OPO reflection diode.
You can see that in the early part of the pump down the polarization rotated a bit. I adjusted the launched power to make some measurements of the nonlinear gain and threshold last week (52518), and after those measurements the OPO was on resonance for a while, which can be seen by the high OPO transmission in the second panel.
It seems that after I lowered the launch power and pulled the OPO off resonance, the transmission has increased a bit, to about 42% transmission of the entire chain, which is a bit better than we were measuring before the pump down. 52420
Note that the calibration of the rejected diode and the OPO reflection diode disagree, since we measured the calirbation of the REFL diode last week using a power meter, I rotated the polarization to maximize the rejected power then the reflected power, and muliptied the rejected power by 0.80 to correct for the difference.