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a decade late and a dollar short..... :(

We all have seen that "laser" looking device that freezes people or things when shot at them. I know that lasers are "hot" only. But is there anyway for a laser to induce an endothermic reaction in the targeted material? I know that lasers tend to heat things up, but can that be reversed? I...

I wonder if it could draw a light saber ;)

So this idea does have some merit. awesome. If there was a way to make the distance at least 5 meters, this can have some real potential. Perhaps trying different spectral colors will improve your estimate. As far as power requirements go, I hear that carbon-fiber nano-batteries are showing...

How about this for a thought. Have the hollow-laser fire a quick pulse (in the ms or less range) to heat the air and thin it out. then an instant later shoot a strong electron stream out in the center of the laser-tube while the air is still thin enough to allow free electron travel down the...

I grant that this is just a rough concept brought up, but what other parameters would better define this idea? I would think that if you put reflective coating (non-conductive) on the inside radius of the lasing material it would help to better equally distribute the light energy.

This idea would only work reliably in a vacuum if it would even work at all. I seen how a ruby laser works and I'm sure this can be adapted to gas lasers as well as semi-conductor lasers with a bit of tweaking. I read an article on how an electron stream wont "ride" inside an laser beam(for...