high power laser diode assembly peltier coolers photodiodes N2172 664nm 1W [B9]

Description

This one's a mystery, folks.  This came from a bio-med research company that's moving to its next phase of trials and no longer needs its laser setup.  We were told that this goes at 664nm with 1W output, but we can't verify that, and we're not sure if the power rating is per diode or total.  We took the top off of the assembly, and found what you see in the pictures.  We were worried that we'd break something if we took it apart further, so that's all we've done.  We figure this is a custom unit.
Maybe you know what this is and want it.  Feel free to make us an offer.
We're a surplus store, and we aren't experts with most of this stuff.  So, we don't make any guarantees beyond what's stated in the listing & pictures.
Feel free to contact us with any questions via ebay.