My Furst Custom laser 7W+ NUBM0E

[Borislav@87]

You are placing your de-canned laser diode unit without a lens very close to your sensor, I know you are doing this to get all of the rapidly widening beam onto the sensor, however you are also reading waste heat from your lasers heat sink and I don't think your meter is accurate, the most powerful of the multi mode blues is doing 8W and that's the NUBM4F

Are you getting 6W with a 3 element ? If so your meter is definitely reading too high.

What other laser diodes have you tested other than NUBM0E ? What lens were you using and what was your reading ?

I don't know how accurate my device is, but it showed very close to your results with the G8 6.33W lens. However, the unprotected diode shows much more power. I don't know if you understand me, I use an interpreter. However, I have described everything in detail with photos. The non-preserved diode shows over 9W with a 3 Elements lens. The canned one shows 5W. Please look carefully at what I have shown back

This is the unserved diode with a 3 Element lens 9W

The second photo is with a 3 Element lens but with a protect diode. Shows just over 5W

 

[RedCowboy]

Move your unit 8 inches back ( 20 cm ) from your sensor and try again.
Also my 6.5W reading is with a DTR G2 lens, with a 3-element it would be 4.2W @ 5A or 4.3W @ 6A

 

[Borislav@87]

Move your unit 8 inches back ( 20 cm ) from your sensor and try again.

Ok I will upload photos now

 

[Borislav@87]

Move your unit 8 inches back ( 20 cm ) from your sensor and try again.
Also my 6.5W reading is with a DTR G2 lens, with a 3-element it would be 4.2W @ 5A or 4.3W @ 6A

I recorded a test with both lasers. The weaker one with the protected diode has a G8 lens. With the non-preserved it is with 3 Element. The distance is 20cm

 

[Borislav@87]

See also this video. The person uses the same power meter. Its lasers have ink power from the manufacturer. The device shows very close results to those written on the laser

 

[RedCowboy]

Why didn't you compare both without stopping the video ?
Did you re-calibrate your homemade LPM between videos ?
Also it doesn't make any sense for you to get a 50% higher reading with the GBall removed, the GBall lenses are 95% efficient.
I have worked with hundreds of laser diodes and dozens of GBall diodes, you simply don't gain 50% by removing the GBall.

I don't see the guy getting any higher than 6w in that video.

Here are just some of my GBall cans I have removed and never have I seen an increase in output like your saying.

 

[Borislav@87]

Okay, now I'm going to prove to you that I'm not lying, if that's what you mean. I will record a video. please wait

 

[Borislav@87]

Why didn't you compare both without stopping the video ?
Did you re-calibrate your homemade LPM between videos ?
Also it doesn't make any sense for you to get a 50% higher reading with the GBall removed, the GBall lenses are 95% efficient.
I have worked with hundreds of laser diodes and dozens of GBall diodes, you simply don't gain 50% by removing the GBall.

I don't see the guy getting any higher than 6w in that video.

Here are just some of my GBall cans I have removed and never have I seen an increase in output like your saying.
View attachment 74555

The results are a little weaker because until recently I called both lasers and they were still not 100% cold. If I put them in the fridge to be true they will probably show 1W more. But here's a video without stopping. I don't want to convince you of anything. The video proves that the unprotected laser diode is much more powerful. I had put a protective diode in the body of the more powerful laser, but I damaged it. Frequent changes of lenses brought dust inside the glass. I tried to clean them, but when I turned them on the glass broke and I then damaged it. That's why I decided to take the same without protection and surprisingly it turned out to be much more powerful

 

[Borislav@87]

If you are wondering if my test method is correct. You can easily make one for $ 5 and compare it to your professional. I will even be happy to do it myself

 

[RedCowboy]

You are getting 6w with a 3 element where you should be getting 4W and you are getting 8.5W with a G8 where you should be getting 6.5W it appears your homemade LPM is reading about 40% to 50% too high.

Have you measured any other laser diodes ?

NDB7875
M-140
NUBM05
NUBM08
anything ?

 

[Borislav@87]

You are getting 6w with a 3 element where you should be getting 4W and you are getting 8.5W with a G8 where you should be getting 6.5W it appears your homemade LPM is reading about 40% to 50% too high.

Have you measured any other laser diodes ?

NDB7875
M-140
NUBM05
NUBM08
anything ?

We still can't understand each other. 6W power sung with G8 lens. 8.5W I received with a lens 3 elements. The small laser that is stronger has a 3 element lens. Even with it it is much more powerful

 

[Borislav@87]

You are getting 6w with a 3 element where you should be getting 4W and you are getting 8.5W with a G8 where you should be getting 6.5W it appears your homemade LPM is reading about 40% to 50% too high.

Have you measured any other laser diodes ?

NDB7875
M-140
NUBM05
NUBM08
anything ?

I haven't measured other diodes because I don't have any. If you have a G8 lens, measure your diode and it will show very close results up to 6W. That is, my device measures relatively accurately. However, here is the mystery, because the unprotected diode is much more powerful than the protected one

 

[RedCowboy]

How many NUBM0E diodes do you have ?

Wait your saying you are using a G8 on top of the GBall factory lens and getting 6W
and
You are using a 3 element on a NUBM0E with the GBall lens removed and getting 9W

Your LPM is reading WAY TOO HIGH .........at least double what it should be.

 

[Borislav@87]

How many NUBM0E diodes do you have ?

Wait your saying you are using a G8 on top of the GBall factory lens and getting 6W
and
You are using a 3 element on a NUBM0E with the GBall lens removed and getting 9W

Your LPM is reading WAY TOO HIGH .........at least double what it should be.

Currently two. One protected and one unprotected. I'm waiting for another unprotected one to arrive for the next laser. I will share the results with him. I modified the driver again to 6A. I'm waiting for him to arrive very soon.

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[Borislav@87]

How many NUBM0E diodes do you have ?

Wait your saying you are using a G8 on top of the GBall factory lens and getting 6W
and
You are using a 3 element on a NUBM0E with the GBall lens removed and getting 9W

Your LPM is reading WAY TOO HIGH .........at least double what it should be.

If you don't believe my device, see the difference in power between the two lasers. The left one cannot ignite the wood with a G8 lens. The right one has a 3 element lens, but its power is much greater. I have focused both lasers to have as few spots as possible

 

[RedCowboy]

The NUBM08 has divergence like the NUBM44, you will get a bar 50mm long at 15meters with a focused G2 and about 22-23mm long with a focused 3-element.

However the NUBM42 and NUBM49 have even worse divergence and your bar will be even longer, also your power output will be lower with the 42 and 49 than the 08

I have all the nubm diodes and I have tested them all.