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[Hemlock_Mike]

Has anyone seen the promos for the high power laser guns? They appear to
be fiber lasers but coupled into optics. --- Mike

 

[RedCowboy]

Yes, they use the fiber pump modules in the NIR range, the kind used in industry to pump active fiber lasers, only with the fiber coupling optics removed and a beam expander lens arrangement added.

The pump modules are knife edge arrays, so you won't hold a tight focus over long distance like Drakes active fiber build, but for 50 meters they can be fun burners, but they also have horrific blinding potential so be careful.

 

[Hemlock_Mike]

Thanks RC. That's what I thought it was. Now -- If I remove the fiber connector, how fast does that beam diverge?
I think I saw someone here report that he had to enlarge the orifice with a drill. I can/t find his post..
Do you remember the location of that project?
Mike

 

[RedCowboy]

Thread '260W IR Laser pump handheld?'

Feb 6, 2025

Hello. I have free time and decided to assemble a portable IR laser with a power of 260W. For this I will use this laser pump which needs 29V and 18A power. This is new to me so I'll probably need some help. I also ordered a compatible lens that mounts on the array and will probably have good focus at about 5-6 meters. In the future I will buy another one that can have a longer focus.. Everything will be in a box again. There will be cooling with a powerful fan and the array will be attached to an aluminum radiator. At the moment I have not selected a suitable driver and power...

• Borislav@87
• Replies: 148
• Forum: Blue, Yellow, & Other Colored Lasers

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[Hemlock_Mike]

Thank you -- I'll go there.
Good weather here today. I flew around for almost an hour.
Hope you're having fun too.
Mike

 

[RedCowboy]

You can see the raw output of the knife edge array ( with fiber & fiber coupling optics removed ) is not useless, but to keep any concentration at any real distance you need a beam expander.

KX400-DIY Laser Cannon. Handheld 400W (Battery DC 37.8V 10Ah; Waveleng

Once your order is successfully placed, our team will commence the assembly and testing processes. This meticulous procedure typically requires 3 to 5 business days to ensure product quality and functionality. We sincerely appreciate your patience and understanding as we work to deliver a...

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