"Blue Demon" & "Green Demon" now available - 15W Blue & 4W Green Handhelds

[Unown (WILD)]

Alright, the moment you've all been waiting for is finally here!

I had a few minutes tonight to tear this thing down. After trying better batteries on the blue pointer I still wasn't getting any better output so I chose that one to disassemble. I first disconnected the diode leads from the driver and tested each diode separately. As I suspected, one diode worked and the other didn't. Not even a glimpse of blue emitting and the power supply showed no current when connected so it was a wide open circuit. I'm guessing the Chinese didn't even bother to test this one after it was assembled.

I first heated up the top cap of the pointer at 600 degrees F with my trusty heat gun. I was able to break it free from the Chinese laser pointer glue and unscrew it fairly easily with a silicone rubber jar opening grip. The final optics assembly came out very easily and I was surprised by how much Chinese laser pointer lube was inside just millimeters from the lens. I cleaned up the globs and went to work on the rest of it. I heated the crap out of it at 600 degrees and it just wouldn't budge. I finally cranked it up to 800 degrees F and finally broke it free using 2 pairs of Channellocks. That piece is marred pretty good but it'll buff out after I throw it on my lathe.

It looked like the diode module assembly was also glued in but the immense heat allowed it to just be pushed out easily from the other end. There was a little bit of thermal paste on it that I wiped clean. I then removed the 2 tiny little Philips screws and popped the top off the module.

There are two "G-Ball" diodes in the module so they are definitely not NUBM44 diodes as previously stated. I was told they are NUBM0F diodes and that makes sense because they do have close to 7 watts output which rules out a NUBM08 or similar diode. I may replace one or two of the diodes with NUBM0Gs and see how that works out. A mixed color output might be neat but who knows.

Here's the album of all the photos I took: https://ibb.co/album/8YFjSy

Thank you so much for this! Yeah you should use a green and blue for a powerful cyan laser

 

[farbe2]

So absolutely nothing special, just a polarization rotation plate and a polarizing beam splitter (e.g. a combiner here).
Looks like they use FAC diodes to get the beam to acceptable divergence.
Edit: too silly to read
Beam must be quite bad than?

 

[Gryphon]

Well that's a shame that one of the diodes was a dud right out of the box. Is all the alignment and aiming of the lasers for proper overlap done with the single combining element?

 

[RedCowboy]

Yea, the angled optic ( right optic ) is a polarization pass/reflect element, just not square like we're used to seeing and the optic on the left is a wave plate that rotates the polarization of the left laser so that both lasers can be orientated the same, so they will perfectly overlap, the right element combines the beams via polarization ( pass/reflect ) .... so the right laser passes through and the left laser reflects due to the wave plate rotating it's polarization.