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19 February 2009 Comparison of silica-based materials and fibers in side- and end-pumped fiber lasers
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Abstract
We have developed a production process for rare earth doped bulk silica to fulfill the demand of such material for fiber laser applications. In contrast to the standard techniques such as a combination of MCVD (modified chemical vapor deposition) and solution doping, our novel technology is based on a granulate process that enables novel ultra large mode area fiber designs (XLMA) with active core diameters above 100 μm as well as larger batch sizes. Several Yb-doped fibers with two different fiber designs were manufactured and successfully tested in both side- and end-pumped fiber laser setups. Both fiber designs have been compared to similar MCVD fibers. The influence of the material composition on the photodarkening properties has been investigated.
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Andreas Langner, Gerhard Schötz, Mario Such, Volker Reichel, Stephan Grimm, Martin Leich, Sonja Unger, Johannes Kirchhof, Björn Wedel, Volker Krause, and Georg Rehmann "Comparison of silica-based materials and fibers in side- and end-pumped fiber lasers", Proc. SPIE 7195, Fiber Lasers VI: Technology, Systems, and Applications, 71950Q (19 February 2009); https://doi.org/10.1117/12.808218
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