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ArcticMyst Security by Avery

Burning with a 30mW DX Green Laser Module without pot mod

Joined
Aug 29, 2010
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6
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Hi, I recently bought a few 30mW Green Laser Modules from DealExtreme, and I started to dig over the limits of that module.

Originally, it cant burn anything, its only 30mW
First tryed to do the famous pot mod. I increased the current from 260mA to 360mA. But it only gets more heat at a big resistor (I think its a shunt resistor) and getting a original 30mW Module by side, I didnt see any difference.

I noticed that I can dissasemble the Laser Module in three parts.

One is the Laser Diode with the Crystal, the second is some kind of lens, the third is the colimating lens.

I noticed that removing the second part, the laser burns Black Insulation Tape and other stuff like dark wood. So I thought its some type of filter or so.

PS: The beam still colimated without the second part. It has no visible difference in beam width.

Here is a video that I made showing that:
YouTube - Burning with 30mW Green Laser from DX - Without POT mod

The first part only beam:
http://www.energylabs.com.br/project/get.php?arquivo=340

So, what might be the "lens" in the middle?
 
Last edited:





Joined
Aug 29, 2010
Messages
6
Points
0
Yeah, I thought that, but most people say that DealExtreme Lasers doesnt have IR Filters, and that IR Filter is also a lens (If I put only that, the point gets big as distance increases)
 
Last edited:
Joined
Jan 18, 2009
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Don't waste your time. You need >100mW to do any kind of actual burning. Overdriving a 30mW DPSS module to output >300% of its rated power in 532nm is going to blow the pump diode or fry the crystals quickly.

Removing the IR filter is a bad idea, because the 808nm IR focuses differently than the 532nm green light. There can be dangerous levels of IR near the green beam that you can't see. and anyone using the green beam as an indication of where the dangerous output is located can go blind without knowing what happened.

If you just want a super-cheap burner, don't bother with the green crystal assembly at all, just get a lens that is coated for 808nm and focus the pump diode output directly. And get goggles that block 808nm. You won't be able to see the beam except for a very faint red glow, but it will burn stuff. And fry your retinas if you're not careful.
 




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