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Old 07-09-2011, 06:14 PM #33
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Default Re: Who would have imagined... BURNING 473 for $45.EDIT: NOW WITH EXTREME COOLING!

Quote:
Originally Posted by qumefox View Post
Dude you can argue with me all you want, but I have TWO of these things that now only put out around 100-150mW of 808nm driving them at 2A that were working fine before running them without optical feedback for an extended length of time. I can see one being a fluke, but not two, plus there's at least one other member here I know who's had an extreme drop in maximum attainable output after running for awhile without feedback.

So lets see the statistics.. Out of 3 of these I have.. The one that's always run with optical feedback is still alive.. And the two that i've run without it have both suffered extreme power degradation due to what i've tracked down as optical damage on the pump facets. (Viewed on a white sheet of paper in the dark you can even SEE the horrible output of them.. Looks pretty much identical to the 445 diode I have that only does 200mW @ 1A.)

There's also the logic of matter. This is still a manufactured product. 2.5W pumps would be extremely overkill to get the rated 10mW output.. and therefor a waste of money.. I know of no business that stays in business long, that wastes money when they don't have to.

They *might* be 1W pumps.. maybe.. but more than that doesn't make sense from a cost vs requirement standpoint.

And I still say it's only a matter of time before other people who run them without feedback end up with 1 or 2mW 473's.. if they continue to lase at all.
Dude, I have two of these as well, and you seem to forget that 473 crystals are NOT efficient. a 500mW pump might get you these powers of 532... but that'd be pushing it. I know these are greater than 2W pumps because I have HAD the other running at OVER 2W IR. Try again with your research

-Dustin


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Old 07-09-2011, 06:18 PM #34
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Default Re: Who would have imagined... BURNING 473 for $45.EDIT: NOW WITH EXTREME COOLING!

Hmm. That's screwy that the wire colors are different colors rather than the standardized coloring for the different conductors. There must have been a short in the PSU that exploded because connecting the grounds shouldn't do that.
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Old 07-11-2011, 02:26 PM #35
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Default Re: Who would have imagined... BURNING 473 for $45.EDIT: NOW WITH EXTREME COOLING!

Where did you get the lens?
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Old 07-11-2011, 03:40 PM #36
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Default Re: Who would have imagined... BURNING 473 for $45.EDIT: NOW WITH EXTREME COOLING!

Quote:
Originally Posted by midias View Post
Where did you get the lens?
Look at post #27. He had the lens laying around.
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