U.S NAVY Laser weapon (Source: CNN) Kimmo Huosionmaa The major technical problem of direct energy weapons like laser guns is overheating. The laser element rakes very much heat, and that's why it must have an effective cooling system. That's why navies of the woŕld are the first users of laser guns. Ships are rounded by sea, and seawater can be used in cooling systems of laser weapons. Those Laser guns are the same type of lasers that are used in metal industry, and most of them are carbon monoxide lasers, what give extremely powerful radiation in the infrared area of the electromagnetic spectrum. Naval laser systems are working as a replacer of a normal anti-aircraft cannon. They simply cut off wings of attacking airplane. The problem of gas lasers is it is a tube filled with gas, what makes it a little bit hard to install to portable systems. Gas leak in the tube causes malfunction of the system. But why military men around the world are interesting with lasers?