4kw is sort of a standard power output, although one place I worked at had a 7kw laser with a huge table, I think 20 feet by 40 feet.
That said, 4,000 watts of laser beam is not a plaything. I got burns from reflections off aluminum sheet, but my favorite was the guy trying to navigate a forklift arond the worst laid out shop I ever saw. He hit the resonator cabinet and knocked the first mirror and waveguide off while the laser was running, and a spot got burned in the side of a panel truck.
4kw is sort of a standard power output, although one place I worked at had a 7kw laser with a huge table, I think 20 feet by 40 feet.
That said, 4,000 watts of laser beam is not a plaything. I got burns from reflections off aluminum sheet, but my favorite was the guy trying to navigate a forklift arond the worst laid out shop I ever saw. He hit the resonator cabinet and knocked the first mirror and waveguide off while the laser was running, and a spot got burned in the side of a panel truck.