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Old 06-02-2017, 08:37 PM #689
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Default Re: NUBM44 6W+ 450nm Laser Diode

I would go with DTR's set up, including his recommended driver, that Chinese thing is going to overheat I would bet.


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Old 06-12-2017, 03:54 PM #690
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Default Re: NUBM44 6W+ 450nm Laser Diode

Is it possible to determine from this photo what laser diode is installed? Module purchased here https://www.aliexpress.com/item/Free...750454123.html Module worked very little, very quickly degraded.
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Old 06-12-2017, 06:27 PM #691
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Default Re: NUBM44 6W+ 450nm Laser Diode

Quote:
Originally Posted by xend View Post
Is it possible to determine from this photo what laser diode is installed? Module purchased here https://www.aliexpress.com/item/Free...750454123.html Module worked very little, very quickly degraded.
It is a NUB diode probably a NUBM08. The ones I have seen taken apart are ball lens units with the can removed which do degrade quickly. I have had quite a few people state they had the exact same problem. One of my larger customers did some testing on the one he got and said he only got 5.6W out of it even though it was rated 12W. He took it apart and it had a NUB that had the ball lens removed.


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Old 06-13-2017, 07:47 AM #692
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Default Re: NUBM44 6W+ 450nm Laser Diode

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Originally Posted by DTR View Post
It is a NUB diode probably a NUBM08. The ones I have seen taken apart are ball lens units with the can removed which do degrade quickly. I have had quite a few people state they had the exact same problem. One of my larger customers did some testing on the one he got and said he only got 5.6W out of it even though it was rated 12W. He took it apart and it had a NUB that had the ball lens removed.


Perhaps this photo will help to accurately identify. Tell me whether it can be replaced by NUMB44. How long the NUMB44 will work?
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Old 06-13-2017, 09:59 PM #693
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Default Re: NUBM44 6W+ 450nm Laser Diode

Hi,
I just decayed a NUMB44 for the hello it to see the outcome as Jordan said they do depreciate very fast . as for the 08 ,07,06 diodes i would leave the can on . i tested all of those diodes , better left alone in my opinion. Even with the ball untacked it still is a very efficient diode even though you can't focus it. personally i like them with the can intact.

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Old 06-13-2017, 10:16 PM #694
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Default Re: NUBM44 6W+ 450nm Laser Diode

Rich, I don't think they are the same diode as the NUBM44 never had a Gball lens. I think the reason they degrade is the gas that is inside an intact NUBM08. Once the can is removed, the diode degrades in the atmosphere. It could very well be the O2.
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Old 06-14-2017, 12:50 AM #695
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Default Re: NUBM44 6W+ 450nm Laser Diode

Hi Paul,
I realize that being a NUBM44 has a can and no gas is involved, I took the ball lens off all of the diodes i stated and they degrade very fast compared to the canned or decanned diodes. Maybe i worded the post wrong but you are correct with your statements buddy. sorry for that..

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Old 06-14-2017, 12:53 AM #696
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Default Re: NUBM44 6W+ 450nm Laser Diode

No, I'm sorry if I misunderstood you. I guess I thought you were trying to determine this by decanning a 44.
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Old 06-14-2017, 12:55 AM #697
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Default Re: NUBM44 6W+ 450nm Laser Diode

Hi Paul,
No biggie my man i have senior moment all the time buddy. But i wouldn't change a thing pal.

Rich
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