BOTHELL, Wash., Aug. 31 -- Aculight Corp., a developer of laser technologies, said it has produced an external cavity diode laser that combines the outputs from seven diode laser bars, each containing 200 single-mode emitters, to generate 26 watts of near-diffraction-limited light at 820 nm. The company said this may be the largest number of diode lasers combined into a single, high-beam-quality light source. "One of the most common lasers around is the diode laser," said Dennis Lowenthal, Aculight's vice president for research and development. 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