Old 06-08-2011, 11:18 PM #17
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Default Re: Would anyone like to see a strange 532nm labby? - for $40 ;)

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Originally Posted by qumefox View Post
I don't think the issue here is with the technology. The issue here is that this was a relatively unique laser, even if it was inefficient.

And if you think that doesn't matter. Try finding a 612nm HeNe now days.
Cool, look forward to seeing the upgrade.

and YES, you can't find one anywhere! I'm still looking.


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Old 06-09-2011, 08:41 AM #18
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Default Re: Would anyone like to see a strange 532nm labby? - for $40 ;)

You guys need to have more faith in me

Come on - I wouldn't kill a unique laser unless I had the intention of making it into something equally or more unique. I'll make you guys a promise - this laser's death will not be in vain.
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Old 06-09-2011, 10:53 AM #19
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Default Re: Would anyone like to see a strange 532nm labby? - for $40 ;)

Could you not replace the diodes without dismantling the whole thing? I think the point qumefox and Trevor were making is that you don't dismantle say a 532nm he-ne because it's inefficient
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Old 06-09-2011, 03:03 PM #20
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Default Re: Would anyone like to see a strange 532nm labby? - for $40 ;)

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Could you not replace the diodes without dismantling the whole thing? I think the point qumefox and Trevor were making is that you don't dismantle say a 532nm he-ne because it's inefficient
No. Each diode, as well as the crystal assembly have little hex adjustment screws for allowing slight refinement of the left/right positioning. However, they had been hot-glued (or epoxied) in place after the alignment was set. The only real way to get a crack at properly fixing alignment, or (in my case what I'm going to do) using new diodes, was to take it apart (which FYI, was really only a process of unscrewing ~4 things) and clean the gunk out of those adjustment "mechanisms".

And gosh, if I ever found a "532nm he-ne", you're right - I'd encase that behind glass and charge admission
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Old 06-09-2011, 03:18 PM #21
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Default Re: Would anyone like to see a strange 532nm labby? - for $40 ;)

I'm curious. Are there any optics on the pump side before the PBS?
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Old 06-09-2011, 03:30 PM #22
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Default Re: Would anyone like to see a strange 532nm labby? - for $40 ;)

Yep - both diodes have their own optics assembly which I left in place. Their optics relative to the PBS is still as-is. The diodes mount right up against lenses and have the hex screws I described as adjustment.
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Old 06-13-2011, 11:39 PM #23
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Default Re: Would anyone like to see a strange 532nm labby? - for $40 ;)

high power 473 blue

Looks like it can seal up nicely. Just don't put it together by the kitchen sink :-P
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Old 06-14-2011, 01:19 AM #24
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Default Re: Would anyone like to see a strange 532nm labby? - for $40 ;)

Um. BBO is both more efficient and isn't hygroscopic like LBO (or do I have those reversed? Going from memory) If you want to build blue, no reason to use LBO.
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Old 06-14-2011, 01:20 AM #25
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Default Re: Would anyone like to see a strange 532nm labby? - for $40 ;)

I must say its quite an interesting find - i've never seen a construction with 2 pump diodes like that in green labbies.

I wonder why it was so inefficient - perhaps something got misaligned, or you were supposed to control the temperature at well. Perhaps its still worth exploring with new pump diodes, sure looks like a well constructed piece of kit!
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Old 06-20-2011, 07:24 PM #26
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Default Re: Would anyone like to see a strange 532nm labby? - for $40 ;)

It looks like a nice high quality laser, try to get it working again, that would be nice. Lucky you to find such a deal.

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