A research team, led by Gerald Buller, a professor at Heriot-Watt University in Edinburgh, Scotland, describes a time-of-flight imaging system that can gather high-resolution, 3-D information about objects from up to 1 km away. System works by sweeping low-power IR laser beam rapidly over object. It then records round-trip flight time of photons in beam as they bounce off object and arrive back at source. Research paper can be found in OSA's open-access journal Optics Express.
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