Laser Cutter

Can a camera lens be used to magnify and strengthen a laser?

I bought a broken camera to try and replace the lens covers on my camera, long story short it can't be done. So I'm looking for another way to use it. I've been researching a little on making a laser cutter, which would be really useful to me. I'm wondering if it's possible or if it would just damage the lens.

What you are asking can get pretty complicated, and I'll say that I'm knowledgeable but not a physicist. There are two issues that mean that what you want to do just won't work. First is that a lens isn't going to do much of anything. What a lens does is to converge light into a coherent beam. A laser is already converged into a coherent beam, that's what a laser is. More importantly, cutting lasers are about power. It's like electricity - voltage is the push behind the amperage. High-powered lasers are high powered, and you can't make a laser pointer into a cutter with a lens. The power to cut through things just isn't there to begin with. And cutters and welders are gas lasers to begin with, for the reason that they they are the power lasers. Ruby lasers are just coherent light....

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