67 W of Output Power From an Yb-Free Er-Doped Fiber Amplifier Cladding Pumped at 976 nm

We report on an Yb-free Er-doped single frequency large mode area (LMA) fiber amplifier cladding pumped at 976 nm. Using a commercial 40/140-μm Er-doped double-clad fiber, output power levels of more than 67 W could be obtained. To the best of our knowledge, we demonstrate the power scalability of Y...

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Bibliographic Details
Published in:IEEE photonics technology letters 2011-04, Vol.23 (7), p.432-434
Main Authors: Kuhn, V, Kracht, D, Neumann, Jörg, Wessels, P
Format: Article
Language:English
Subjects:
Cooling
Erbium
laser amplifiers
Optical pumping
Power generation
Power lasers
Pump lasers
Semiconductor lasers
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Summary:We report on an Yb-free Er-doped single frequency large mode area (LMA) fiber amplifier cladding pumped at 976 nm. Using a commercial 40/140-μm Er-doped double-clad fiber, output power levels of more than 67 W could be obtained. To the best of our knowledge, we demonstrate the power scalability of Yb-free Er-doped fiber amplifiers to output powers of multiple 10 W for the first time. The obtained output power is also the highest value ever reported for an Yb-free Er-doped fiber laser system pumped around 980 nm.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2011.2107735