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Old 01-13-2017, 05:33 AM #1
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Default 1 kW Laser

I was thinking of saving up for a 1 kW laser rifle much like the one styropyro built in his video once I get my student loan paid off. What I would do differently would be to use NUBM44s focused independently with a G-2 lens', then much like styropyros to collimate them into one with a large lens at the end. I think driving them and focusing them independently would create a much better beam spot but would also cause a great deal of heat. I think a noble design could fix that easily though. I think it would cost me around $20k to do this but it would be absolutely insane. Some of you may think I've lost my mind but wouldn't that be a sight man, like to see a kilowatt of laser energy in a beam the diameter of a hair in a handheld device



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Old 01-13-2017, 05:53 AM #2
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Default Re: 1 kW Laser

Not a good idea for a lot of reasons.
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Old 01-13-2017, 05:55 AM #3
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Default Re: 1 kW Laser

Quote:
Originally Posted by Encap View Post
Not a good idea for a lot of reasons.
Well yeah I just found out that there probably isn't even enough NUBM44s to make this happen anyway
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Old 01-13-2017, 06:02 AM #4
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Default Re: 1 kW Laser

Not to mention it'd likely cost >$25,000. Better things to spend your money on. That's a 10% down payment on a decent house in many places. Or a nice vehicle bought outright.
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Last edited by diachi; 01-13-2017 at 06:04 AM.
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Old 01-13-2017, 06:20 AM #5
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Default Re: 1 kW Laser

Quote:
Originally Posted by HydroSean View Post
Well yeah I just found out that there probably isn't even enough NUBM44s to make this happen anyway
Yes plus beams do not combine the way you think--you can combine 2 beams with a PBS cube-- Polarized beam splitters take two beams of opposite polarization and combines them together but not possible to combine 200 5W or 166 6W beams into a single "beam the diameter of a hair"

See : Reference Guide: How to Combine Lasers

Would be a very expensive $20k practical joke more than anything else--at best all you could do is focus all of the beams individually onto one focal point to get a combined power at that one point -so a stationary setup with all of focused on one point and only that point. - or hand held at the exact distance of the focal point away from the target like styro did

diachi is 100% right--the money would be much better spent on something of value in the real world.

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Old 01-13-2017, 10:01 PM #6
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Default Re: 1 kW Laser

Hey... you got 20K to blow.... Knock yourself out.
Don't forget to take pics..

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Old 01-13-2017, 10:27 PM #7
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Default Re: 1 kW Laser

That money could buy me a new sony camera.
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Old 01-13-2017, 11:33 PM #8
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Default Re: 1 kW Laser

Sorry but damn lasers are the last thing I would drop 20k on. If you got that kinda cash to blow then go nuts lol. Maybe your idea isn't completely crazy though, I'm sure if you scaled it down a bit then you'd have a really cool laser project on your hands.
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Old 01-14-2017, 12:01 AM #9
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Default Re: 1 kW Laser

The diode spacing alone would make this look nothing like a rifle.
The heat sinking and cooling material alone would make this look nothing like a rifle.
The power considerations alone would make this look nothing like a rifle.
Add these together, and you'd be lucky to get this working in a size smaller than a mini fridge.
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Old 01-14-2017, 12:14 AM #10
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Default Re: 1 kW Laser

Quote:
Originally Posted by Cyparagon View Post
The diode spacing alone would make this look nothing like a rifle.
The heat sinking and cooling material alone would make this look nothing like a rifle.
The power considerations alone would make this look nothing like a rifle.
Add these together, and you'd be lucky to get this working in a size smaller than a mini fridge.
You gotta think outside the box.
Maybe if he plundered all the diodes out of DVD/BluRay burners, he can claim that he "rifled" them from surplus?

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Old 01-14-2017, 01:04 AM #11
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Default Re: 1 kW Laser

Quote:
Originally Posted by HydroSean View Post
like to see a kilowatt of laser energy in a beam the diameter of a hair in a handheld device
This might actually pose a problem if you could achieve it.

If you get a kW of light and focus it down to a spot the width of a hair in free air, i think you'll reach the point of air breakdown. This basically causes sparks to appear in mid air.

I have seen this effect with pulsed lasers (1064 nm) and it looks quite spectacular, but i wonder what would happen if a continous laser was to cause this... perhaps a permanent arc discharging away somewhere around the focal point?
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