After reading and making a stupid comment on this article I did a little googling. To produce a 3Kw output with current kit will be quite chunky. Solid state lasers at the moment are about 18% efficient on a good day, so to get the 3Kw output you will need an input of about 15Kw this will require a small leccy car battery pack typically consisting of 36X 4Ah li-ion batteries, an example of one of these is an HP laptop battery to give around 4 hrs runtime .

When you run this lot together, you will need a fan to cool it so when you are charging up your laser to fire don't count on being invisible in IR frequencies and don't count on being able to run very fast carrying a small car sized battery pack.

To be fair, at Stanford Uni and other places there are potential Li batteries being developed that will be as much as ten times better in terms of power density,but that still works out to a lot of battery and carrying spares will definitely slow you down. Perhaps we should try to capture the next Predator that comes hunting on this planet!

FINALLY I GET MY FRIKKIN SPARTAN LASER!

Took long enough....

Nothing will beat the price/performance ratio of kinetic energy.

There would need to be a major energy source breakthrough to make this feasible.

50 years ago a computer filled and entire room and had less processing power than a basic calculator. Now you can get that in your wrist watch with a 5-year battery, or many more times the processing power in a hand-held.

It'll get there, eventually.

If it weighs as much as an AS50 you aren't going to be running far, you can hardly run with the bloody things!

So how much damage could a 3KW laser actually do and from what range?

I'm guessing blinding your enemy is feasible but how long would you have to aim it for to do something more lethal?