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The US Army is developing its most powerful laser yet that is a million times more powerful than current systems. 

Most laser weapons fire a continuous beam until a target melts or catches fire, but the Tactical Ultrashort Pulsed Laser (UPSL) for Army Platforms will emit short, pulse-like bursts.

It's being designed to reach a terawatt for a brief 200 femtoseconds, which is one quadrillionth of a second, compared to the 150-kilowatt maximum of current systems.

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