What were they trying to do? Crystals on a heatsink.

[macona]

Got these things too. Not sure what they were trying to do. It appears they put YAG or Vandanate crystals on a big water cooled heatsink. Maybe side pumping with a diode bar? The crystals are just held in place by spring tension. I popped one off and it appeared the back side might be coated? Maybe for 808HR?

-Jerry


Yag on heatsinks? by macona, on Flickr


Yag on a heatsink? by macona, on Flickr

[hologeek]

Might be for a thin disk yag crystal...

[Meatball]

I know the spring would be for keeping good thermal contact and alignment in the case of thermal expansion, kind of difficult for me to deduce a pumping scheme without seeing these in their natural environment. :P

What will you do with them?

[mixedgas]

That is unsymmetrical cooling. They either were side pumped with low power or a not so great, older, design..

Steve

[macona]

I know the spring would be for keeping good thermal contact and alignment in the case of thermal expansion, kind of difficult for me to deduce a pumping scheme without seeing these in their natural environment. :P

What will you do with them?

No clue. Just something else that was in a pile of goodies I got.