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Recent advances in self-frequency-doubling crystals

kecked

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I happily take your unit off your hands. I use them for lumia.
 

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Youch! That is tough news, WizardG. Mine is staying stable every time I fire it up. Did you get a very early model, or was this one of the last units they mailed out?
 

WizardG

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@ Paul: Not sure as I got mine through another member here who got it from the Aussie reseller, but I think it was one of the later units as it has the updated driver. I really hope they do another run of these crystals.

And sorry kecked, I like lumia too :cool: I think I'll hold on to this one at least until I know I can get another!
 

paul1598419

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Yeah, if you didn't pounce on these when they were first revealed, you do run the risk of getting something that was pot modded improperly and is just waiting to fail. I feel for you. You might consider backing the current off of the pump diode a bit and see what you get then. It just MIGHT fall back into place.
 
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I wonder if they drive these so hard the pump is dying and not the crystal. Anyone try to tec cool the diode? If they were not so rare I’d like to see a liquid nitrogen dip.
 
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It is worth checking the pump diode if possible. I sincerely hope it isn't due to the crystal degrading. With that wavelength, less power and longer lifetime would be more desirable IMO.
 




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