GB on yellows?

[pseudonomen137]

Unlike green and blue DPSS processes which are just a diode pumping something like YAG, and then frequency doubled, yellow DPSS uses two lines of yag, 1064nm and something in the 1300s and combines those into the KTP. My guess is that at low powers or odd temperatures only the 1064nm line is lasing you're basically getting a very weak 532nm output, but that's just a guess. It may not even be 532nm for all I know.