Re: FS: Collection HUGE PRICE DROPS
Mine is rather stable, and the divergence on most yellows is epic it seems. But indeed they have a very narrow temperature band. Too hot or cold and it won't lase properly, not just because it's DPSS, but because you also lose the 1319nm line. It helps to use lithium AAAs. The driver is run conservatively, and so the voltage drop from 3V is often what makes it weak. The 3.17Vor so you get with the lithiums creates a negligible heat, but it drives the diode better/properly for longer, so you get a bit more out of it and it's less finicky. I usually keep them in my pocket to keep them warm. Laserglow suggests a 30s duty cycle to help the diode last. (It's a giant 500mw crammed up in there memory serving, so it gets hot fast, even if the laser case isn't)