25 Jun '13, 4pm

New laser shows what substances are made of; could be new eyes for military #news #electronics

ANN ARBOR – A new laser that can show what objects are made of could help military aircraft identify hidden dangers such as weapons arsenals far below. "For the defense and intelligence communities, this could add a new set of eyes," said Mohammed Islam, a professor of electrical engineering and computer science and biomedical engineering at the University of Michigan. The system, which is made of off-the-shelf telecommunications technology, emits a broadband beam of infrared light. While most lasers emit light of one wavelength, or color, super-continuum lasers like this one give off a tight beam packed with columns of light covering a range of wavelengths – a blend of colors. Because this beam is in the infrared region, it's invisible to human eyes. But it can illuminate deep information. The infrared contains what scientists refer to as the "spectral fingerprinting rang...

Full article: http://www.ecnmag.com/news/2013/06/new-laser-shows-what-s...

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