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1,6W 525nm green laser diode

Alaskan

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One? Just one? Hell no, ten!
 



Alaskan

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Knife edged

That is the idea. I checked with a seller on ebay who FAC corrects diodes asking if she could get the NDG7D75T to correct and this was her response:



I need to know where the knee is for that much power as well as the diode temperature to determine whether to push them that hard, even if they will produce that much output.
 

skijohn

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I bought an NDG7475 1W+ 520nm Green Laser Diode From DTR Monday and tracking shows it's in town...
 

Alaskan

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Can’t go wrong with either DTR or that diode. Those diodes will produce at least 1.3 watts out of an AR coated collimator lens. Much depends upon the heat sink to keep it cool enough to have a long life.
 
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Peter Zeboroff

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For those who may not know, sabzh21 seems to have two of these 525nm 1.6 watt green laser diodes and he is asking $142.00 U.S.
 

Alaskan

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The spec. sheet says max 2.3 amps, but you know what we do, we run them higher. Someone may have already posted where the "knee" is at for those diodes (it can vary some between individual diodes of the same type), or the place where increasing the current no longer produces a linear increase of output, but I have not seen it yet.

Testing to find where the knee is at is just to find a fairly safe place to operate it at, you don't want to set the current on the diode where increasing it no longer produces a linear smooth increase of output, keep it below that by some healthy percentage. Anyone have a rule of thumb for that?

You can go to the DTR LPF google store and see photo's where he has tested many diodes to find the knee showing both the voltage and currents throughout the test, that should give you an idea, then look where he recommends to run the diode at to extrapolate a percentage which may vary between models, I don't know.



Link to .pdf I saved on my site:
I tried to get that diode direct from the manufacturer, they won't sell to me :( Did you buy through that Japanese listing?

This has been the case for most of our diodes, you have to get them through some other source they can leak to us through.
 
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