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, Andreas Langner, Gerhard Schötz, Gerhard Schötz, Mario Such, Mario Such, Volker Reichel, Volker Reichel, Stephan Grimm, Stephan Grimm, Martin Leich, Martin Leich, Sonja Unger, Sonja Unger, Johannes Kirchhof, Johannes Kirchhof, Björn Wedel, Björn Wedel, Volker Krause, Volker Krause, Georg Rehmann, 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); doi: 10.1117/12.808218; https://doi.org/10.1117/12.808218
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