Krazer,
Thank you very much for your help with this, I have a dozen 40+ watt FAP800 modules in my collection of goodies already, I'm hoping I can pump with them, just don't remember how many of them are 808nm which brings up another question, if you can help; I've seen FAP800 diode assemblies used before as vanadate pumps, but I believe they were 806 nm, is this typical? Do FAP pumps for vanadate use 806 nm units which are then temperature regulated to 808 nm?
After pointing it out, I can now see where the IR passes through an optic to an opening on the side of the curved piece of aluminium, now identified as a power dump. I saw that earlier, but thought it must have been a reflection, wrong shape for that:
Unfortunately, this is all I found on ebay, just this unit. However, I did see a 80 MHz AOM driver on ebay which is listed as coming from a 355 nm Avia laser, their price is far too high for me to shell out 500 bucks for it, so unless the price comes down, not buying that. RF is easy for me, I've worked with RF my entire career, build my own solid state and tube RF amplifiers in support of my previous ham radio moonbounce hobby, up to 6 KW output at 144 MHz. I already have a lot of TEC's and regulators for crystal ovens along with those FAP units, so have a head start. If this is indeed 532 nm, that would be wonderful, would not need to tear up such beautiful work to make green.
Would sure like to figure out if this is 532nm or not, I don't know how receptive Coherent would be for such questions on surplus gear, but if I can identify it, I can try to get a manual.
Edit: Adding another photo
Received this advice from a laser professional outside of the forum:
The pump (probably 808 nm) and fundamental (probably 1064 nm) will be the
same regardless of output wavelength. So, it would only be near the actual
beam exit that coatings would differ. Also look for an IR blocking filter.
Another thing to keep in mind, that as a high power CW laser, this is
only good at the IR wavelength. So, the green SHG (KTP) would need to be
inside the cavity. Whether that is at all practical is highly doubtful
to get any decent efficiency. Futher, the fundamental OC mirror would
need to be replaced with an HR with a similar RoC.
Or if you want it to be Q-switched, aside from providing the appropriate
driver, an external SHG crystal could be substituted for the UV, or perhaps
it could be modified since 355 nm may be done in two stages, one green.
But it would be a shame to rip it apart to just use a couple of the components.
It might be best to document it, confirm that nothing is missing, then resell
it. To the proper buyer it would be worth a heck of a lot more than $400
as spare parts.
Use the proceeds to satisfy your high power green obsession. ;-)
