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104 W Highly Efficient Thulium Doped Germanate Glass Fiber Laser

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104 W 1.9µm laser was demonstrated from a 40-cm-long dual-end pumped Tm-doped germanate glass fiber. The Slope efficiency of 68% was achieved from 20-cm-long one-end pumped fiber with an output power of 64 W.

© 2007 Optical Society of America

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