I was going to make a similar measurement to yesterday (https://nodus.ligo.caltech.edu:8081/CTN/1641) for the North laser. However when I stuck the power meter in the beam I got ~630 mW which is more than the S130C head should take. It turns out that the laser is a 700 mW NPRO, its model number is M126N-1064-700. Maybe the confusion arrose from the switch but there are references going back as far as 2012 measurements of the 700 mW laser.
The safety documentation for the lab needs to be updated as people said repeatedly that it was 100 mW and the SOP on the door says its 100 mW.
I don't have a 1 W power head and can't find one in the labs I have access to, I will ask around for one tomorrow or use a beam splitting optic and bring the power down to something I can manageably measure with. This is the task for first thing tomorrow.