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Green Laser Absorption Loss Culprit ID’d

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SANTA BARBARA, Calif., Aug. 6, 2010 — Computational scientists at the University of California, Santa Barbara (UCSB) believe they have identified the source of absorption loss in green lasers. The team investigated the light absorption by carriers in nitride lasers and identified the high concentration of non-ionized Mg acceptor atoms in p-type GaN as the culprit for the large absorption loss in these devices. The research team, led by Professor Chris Van de Walle, used cutting-edge first-principles calculations to study a number of different absorption processes. These processes are usually analyzed using...Read full article

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