Your best bet is probably Photon Lexicon. There's a lot of concentrated laser nerdery over there.
Thanks! That's the kind of resource I was hoping for.
You say gas laser, but from what I see on Google the Quanta Ray series is all pulsed Nd:YAG/dye. Pulsed lasers aren't something to be trifled with, and many of the dyes used in laser applications are notoriously nasty (like, spill some on your skin and die, according to some stories I've heard).
Nope, it's DEFINITELY a purely gas laser. (Doh! See next post)
Sorry I don't have photos of the optical section, I forgot to take any in the limited time we had to get the electronics separated from the (damaged) optics and into my car. I'll get some next time I see my friend.
Btw I don't even know which gas. But I have the gas flow reg and filtering parts.
Probably Quanta Ray _now_ make only Nd:YAG lasers, but this was built in 1983.
YAGs are often pumped with flash lamps, sometimes in an elliptical reflector cavity next to the YAG rod, all flooded with cooling water, so you'd expect to see lamp driving circuitry as a big chunk of the supply (actually, your control panel shows two lamps, which I've seen references to, but not sure how the second lamp is used). You'll also have a supply for the Q switch (pockels cell?) and a lot of the rest will be system monitoring, interlocks, and then support for whatever else is in the optical section.
Yep. Though lasers are not in my hobby list, I'm aware of the general types and principles.
Currently I'm tracing out cabling and functional sections of the system. Not to use as a laser PS, but to see if the power supply sections may be generally useful. it appears to use thyristor phase control of charging the capacitor banks (to variable level to control pulse power), then some even more beefy thyristors to supply the two cavities, plus twin HV ignition circuits, plus one neat little HV pulser driving the Q-switch.
In this unit the main power supplies are duplicated, since the optics has one Q-switched cavity, then the pulsed beam leaves via a second 'amplifier' cavity. Which is nice, it means the really heavy duty power circuits and their controls are all duplicated.
Just tread carefully, people there justifiably get a bit worried if they think someone without any laser knowledge is playing with a high power laser.
Understandable. In fact the risks with high power lasers are why such things are
not in my hobby list. I'm OK with deadly high voltages, but not with invisible beams that can bounce off some shiny surface across the room and instantly permanently blind you. No thanks.
Edit to add:
I'm hoping it might be hackable into something like a small contact spot welder (battery tabs?), pulsed jewellery TIG welder, sputtering source in my vacuum chamber... that kind of thing.