Lazerlitious

[additude]

Hello everyone. I wish you all the best and I hope life if being good to you.
I've been involved with electronics most of my life and have only tinkered with lasers up until around November of last year. Then I started realizing that lasers can do some cool stuff and there is a lot to learn from them. So, I bought myself a pair of laser safety goggles and started reading and investigating and purchased a couple of green laser pointers, then picked up a couple of NUMB44 and SXD drivers and have been trying to gut one laser pointer and remake it into a super laser pointer. But I am not done with that project yet. But it brought me to this recommended forum.
Thanks for having this forum and thanks for all that everyone does here.

 

[RedCowboy]

Welcome to LPF

The NUBM44 makes a lot of waste heat, so a small green pointer housing most certainly won't be enough heat sink, also the divergence of the NUBM44 is really aggressive, you will get a 2 inch long line rather than a spot at just 15 feet with a G2 lens and about a 1 inch long line at 15 feet with a G8 or 3EB ( 3-element blue AR coated ) only with a 3EB you will lose 2 watts out of 7 due to edge clipping inside the lens barrel.

A better choice would be a NDB7875 good for about 3W @ 2.3A

Make certain you wear the appropriate laser safety glasses to attenuate any specular or diffuse reflections when working with lasers over 5mw.

 

[additude]

Thanks for that bro. I have seen the divergence that you mention, from my "second" NUBM4... I did purchase some "real" laser glasses, not a "give away" pair. I can barely see the blue light with the real pair.

 

[Lifetime17]

Hi,
As Red stated the 44 diode produce a lot of wasted heat , so make sure the heat sink is large enough to consume it.
Rich

78FDD3E2-9269-4737-9CAC-DA6299EC5F4F.jpeg

• Lifetime17
• Nov 13, 2022

 

[additude]

Thanks. This is the heatsink I have it set in. It's part of an assembly with an SXD Driver, separate polarity protection, battery compartment/switch.

 

[Lifetime17]

Hi,
I also have this one in stock prewired powder coated 2x 18350