CAMBRIDGE, Mass., Aug. 11, 2017 — A new terahertz design that can be etched on microchips boosts the power output of chip-mounted terahertz lasers by 80 percent. The novel design shows promise for future industrial imaging and chemical detection applications. A new technique boosts the power output of tiny, chip-mounted terahertz lasers by 80 percent. Courtesy of Demin Liu/Molgraphics. The standard method for producing power-efficient sources of terahertz rays involves a bulky, power-hungry tabletop device. 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