Old 03-08-2015, 10:17 AM #1
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Default 1.8W A-Type M140 445nm Laser Diode

1.8W A-Type M140 445nm Laser Diode

I realized I had never done a power test on the lower bin diodes out of the M140 projectors so here one is. These are the ones without the dot above the barcode that are on the outside of the array.

So here it is.






This is 700mA it was just flashing between 6/7 at the time the picture was taken and I did not notice it.

















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Old 03-08-2015, 04:53 PM #2
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Default Re: 1.8W A-Type M140 445nm Laser Diode

Thanks for your continuing work DTR for the hobbyist out there in the world great work as aways
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Old 03-08-2015, 06:08 PM #3
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Default Re: 1.8W A-Type M140 445nm Laser Diode

So these are the XJ-A series then (?)

I have to say I've pushed a few of these diodes into the 2W range before, it was an extreme push but they were stable..... Your results for these are impressive, ~1.8W+ of 445 is ideal at $34. Thanks for posting your results!!

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Old 03-08-2015, 07:46 PM #4
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Default Re: 1.8W A-Type M140 445nm Laser Diode

Quote:
Originally Posted by danefex View Post
So these are the XJ-A series then (?)
Well I think it was bad to just designate them by projector as we found with the XJ-A at the time was some were doing 1.8W-2W and some only did 1.4W-1.6W @ 1.8A. Thought it was just efficiency but looking back now with what we know about the M140 I am pretty sure they had two types of diodes in them as well. Probably the 1.6W ones around the outside of the array and 1.8W ones in the center. These 1.8W ones have been pretty consistent between 1.8W-2W Just like what we considered the efficient ones out of the A140 and none of them have been the low that we saw out of the ones that only did 1.4W-1.6W. The current XJ-A series like the A141 has the same spread as the M140's do.
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