The Directed Energy Weapons reference article from the English Wikipedia on 24-Apr-2004
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Directed Energy Weapons

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Directed Energy Weapons fire a beam of some frequency of the electromagnetic spectrum to some effect on the target. A flashlight directs light in the visible infared spectrums but it is such low power as to not be harmfull, though some searchlights are bright enough to cause permanent or temporary blindness. The term really applies to a field including high power lasers, microwave guns, or any device that can create and direct elctromagnetic radiation in such a way as to incapacitate or damage the target. Some examples of directed energy weapons: The principle drawback of directed weapons is high power consumption, limited range especially in inclement weather, and high production cost. Their future use in non-lethal weapon systems seem limited due to the generally perceived cruel nature of victim incapacitation. Some weapons of this type are already in testing for deployment as battlefield anti-missile weapons.