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Submission + - Highly Directional Terahertz Laser Demonstrated (scienceblog.com)

eldavojohn writes: A new paper published this week in the journal Nature Materials announces a successful demonstration of highly directional terahertz semiconductor lasers. You might not think it's a big deal that some Harvard and University of Leeds researchers (funded partially by the US Air Force) figured out how to better direct lasers but this means the ability to see what's in someone's pockets and clothing. The big benefit is that they are lower energy than X-Rays and less invasive since they cannot pass through water or metal. Coming soon to an airport near you or buzzing around on board a drone in civilian airspace?
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Highly Directional Terahertz Laser Demonstrated

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