Military mega-lasers are too hot to handle


High-energy laser weapons have been hailed as the future of anti-missile defence, but they may be further from being battle-ready than military chiefs hoped.
In recent tests, several prototypes have suffered serious damage to their optics at intensities well below the expected levels of tolerance. "Optical damage has been quietly alarming upper management in most major programmes," Sean Ross of the US Air Force Research Laboratory in New Mexico told a meeting of the Directed Energy Professional Society in Newton, Massachusetts, last week. There are also big problems managing the waste heat generated by high-intensity beams.

Full article by Jeff Hecht on Discovery News

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