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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Kočí, Jan | Prague |
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Azam, Siraj |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Hudson, Darren D.
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article
High-power diode-pumped fiber laser operating at 3 μm
Abstract
<p>A high-power diode-cladding-pumped Ho<sup>3+</sup>-doped fluoride glass fiber laser operating in cascade mode is demonstrated. The <sup>5</sup>I <sub>6</sub>→<sup>5</sup>I<sub>7</sub> and <sup>5</sup>I <sub>7</sub>→<sup>5</sup>I<sub>8</sub> laser transitions produced 0:77W at a measured slope efficiency of 12.4% and 0:24Wat a measured slope efficiency of 5.2%, respectively. Using a long fiber length, which forced a large threshold for the <sup>5</sup>I<sub>7</sub>→<sup>5</sup>I<sub>8</sub> transition, a wavelength of 3:002 μm was measured at maximum output power, making this system the first watt-level fiber laser operating in the mid-IR.</p>