Yea, they have been using lasers to mark targets since the 70s. They are developing 747s now that have lasers.
On Tue, Sep 7, 2010 at 3:33 AM, Martin Baxter <[email protected]>wrote: > > > I was about to blast this article for the ludicrous notion that lasers > could knock anything at distance out of the sky (the power and focusing > issues alone will preclude that for years to come), but the jamming factor > does seem plausible. > > > On Mon, Sep 6, 2010 at 6:09 PM, Mr. Worf <[email protected]> wrote: > >> >> >> UM develops lasers to defend helicopters against missile attacks >> >> By Ben Coxworth <http://www.gizmag.com/author/ben-coxworth/> >> >> *11:36 September 4, 2010* >> >> [image: New laser technology could be used to protect military >> helicopters from heat-seeking >> missi...]<http://www.gizmag.com/lasers-protect-helicopters-from-missiles/16251/picture/120131/> >> >> New laser technology could be used to protect military helicopters from >> heat-seeking missiles >> Laser Marking >> Machines<http://googleads.g.doubleclick.net/aclk?sa=l&ai=BD41bWWWFTLeGO5GqjQS8mdyuBd2thqkBwe-cvBTAjbcBsIPKARABGAEgs9z6ASgEOABQ8u6WqPv_____AWDJxs2GyKOgGbIBDnd3dy5naXptYWcuY29tugEKMzAweDI1MF9qc8gBAdoBmQFodHRwOi8vd3d3Lmdpem1hZy5jb20vbGFzZXJzLXByb3RlY3QtaGVsaWNvcHRlcnMtZnJvbS1taXNzaWxlcy8xNjI1MS8_dXRtX3NvdXJjZT1HaXptYWcrU3Vic2NyaWJlcnMmdXRtX2NhbXBhaWduPTdiYzhmNjJhOWYtVUEtMjIzNTM2MC00JnV0bV9tZWRpdW09ZW1haWyoAwHoA50F6AOAKOgD6AX1AwIAAEQ&num=1&sig=AGiWqtxrPD5FxU8wndmIlPWJabPMcSvaqQ&client=ca-pub-1607124478120364&adurl=http://www.laserstar.net/3500_series.html> >> - 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The lasers >> wouldn’t shoot down the missiles, but would instead jam their sensors, >> essentially blinding them. This isn’t the first time that laser >> systems<http://www.gizmag.com/go/7461/> have >> been used for this purpose, but the creators of *this* system claim that >> it is better suited to helicopters than anything that has come before. >> >> The UM <http://www.umich.edu/> system detects incoming missiles, then >> shoots at them with a mid-infrared supercontinuum laser. While most lasers >> emit light of just one wavelength, supercontinuums pack a broad range of >> wavelengths into their focused beam. Although such lasers typically emit a >> beam of visible light, due to the fact that this is a mid-infrared >> supercontinuum, its beam isn’t seen but is felt as heat. The resulting broad >> spectrum infrared beam mimics the electromagnetic signature of a helicopter >> engine, and causes the missile to lose track of where the actual helicopter >> is. It is said to be effective up to a distance of 2.9 km (1.8 miles). >> >> One of the big strengths of this system, according to its makers, is its >> simple design and off-the-shelf fiber optic parts. “The laser-based infrared >> countermeasures in use now for some aircraft have 84 pieces of moving >> optics. They couldn't withstand the shake, rattle and roll of helicopters,” >> said Mohammed Islam, a professor in the Department of Electrical Engineering >> and Computer Science. “We've used good, old-fashioned stuff from your >> telephone network to build a laser that has no moving parts.” >> >> Islam’s claims may soon be put to the test – his UM spin-off company, Omni >> Sciences <http://www.omnisciinc.com/index.htm>, has recently received >> US$1 million in grants from the US Army and the Defense Advanced Research >> Projects Agency (DARPA <http://www.gizmag.com/tag/darpa>) to build a >> second-generation prototype. >> >> > > > -- > "If all the world's a stage and we are merely players, who the bloody hell > wrote the script?" -- Charles E Grant > > http://www.youtube.com/watch?v=fQUxw9aUVik > > > >
