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Addressing Inefficiency in Laser Diodes

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Jason Farmer, nLight

At the time the Super High Efficiency Diode Sources (SHEDS) program started in September 2003, nLight’s highest-performing 940-nm semiconductor lasers operated near 50 percent overall efficiency. In little more than a year, the improvements described here and others have enabled the company to demonstrate high-power semiconductor lasers with efficiencies of more than 70 percent. With the focus on efficiency provided by SHEDS, a clear experimental path that will enable 75 percent efficiency in the near future has been identified. The goal is 80 percent by September 2006. This is clearly...Read full article

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