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The worlds most powerful laser is 2,000 trillion watts and likely costs many millions hehe. Do you mean the most powerful single visible diode laser? That currently stands at just 7 watts as far as I know. Is this a laser pointer? Or did you just buy a diode and heat sync? Also, some laser...

Regardless, I really don't see how this applies when such a massive power difference was shown, 3.9 watts to 5.4 watts is very significant. the beam is also far brighter and burns a lot more. I took many measurements of the 2 powers and got consistent results, so that's really all that matters...

It's been perfectly accurate against other LPMs in videos I've watched with the same pointers... So that's good enough for me. Do you have any actual evidence that it's inaccurate? Or do you just assume this?

Hm, I figured the power increase was because its original driver was set at a lower and more safe current for the diode, but now with the batteries hooked up directly there's nothing stopping the current from flowing a full capacity from the batteries?

Here's a shot of the power reading. The module is put back together and attached to my laser gun. The highest this thing ever outputted before was 3.9 watts.

I took the module apart and hooked the batteries right up to the diode. I snipped the wires right off from the driver.

So I decided to run an older Chinese laser module straight off 2, 3.7V lithium ion batteries in series without any power supply. The power output majorly increased from 3.8 watts to 5.4 watts(Yes I have an LPM). Though the module obviously gets hot much quicker, I haven't had any problems so...

I just throw more watts at the problem. ;)

The divergence on the beam is very poor. So it has a pretty low range. After about 5-6 feet distance it struggles to burn materials that are not black or dark colored. I would have to hold the gun very steady in one spot for at least 10-20 seconds on a light color carpet at that range. On the...

Thanks everyone. I'm looking to make a compact hobbie laser gun. I was thinking of combining 2 NUBM44 7 watt diodes to make 14 watts using phase combine prism for combining the 2 beams. But i want the gun to have good range too. How is the divergence on the NUBM44? Would its power make up...

What the title says. What diode has the best divergence that is over 4 watts?

Thanks guys. Here's a shot of the beam.

Here's the gun so far! Works pretty well, been struggling to get functioning beam expansion for long range though. But the alignment is pretty good on the 3 lasers.

I'm curious about the properties of ruby. It does seem to glow when light hits it. Why do ruby lasers only seem to work with intense flash lamps? Can you not create a weak laser with a constant running light source?

If you're looking for something powerful and cheap, and fulling functioning with a power supply, check these babies out. Beam divergence is pretty rough, but they are beasts for only $70. I've noticed people on here don't like Chinese products, but if you know what you're looking for, you...

Thanks for all the info guys!

Actually yes, you are correct on that. It does say 6000 mAH. Is there a way to know what the amps are from amp hours?

There are a few things I am confused about when it comes to giving power to a laser power supply. What happens if a battery is hooked up to a laser power supply, and the amp rating on the battery is higher than the power supply requires? In this case, I have a battery that is 6 amps, and the...

The mirrors are what I have available. I would like to get proper mirrors at some point. Yes, a beam expander is planned! Thanks for the diagram. Your setup looks interesting, but I'm not too sure about space efficiency for the internals of the gun. Wouldn't it be basically the same thing...

Hey everyone. Just wanted to share my project I have started. I'll be adding new images here as I go. This project is a $200 budget laser gun(SMG stlye). The components are 3 fan cooled 7 watt modules knife edged combined. This is the first time I've done any sort of beam combining. All of...