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20 June 2024 Recent advances in fabrication of large volume doped fiber preform materials
Katrin Wondraczek, Florian Lindner, Martin Leich, Joerg Bierlich, Robert Müller, Roman Sajzew, Michael Duparre, Lothar Wondraczek, Matthias Jaeger
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Proceedings Volume PC13003, Fiber Lasers and Glass Photonics: Materials through Applications IV; PC130030C (2024) https://doi.org/10.1117/12.3022320
Event: SPIE Photonics Europe, 2024, Strasbourg, France
Abstract
We will report on recent advances in fabrication of large volume silica based, doped fiber preform materials synthesized via powder-based processes. Recently, there has been increased interest for power scaling in fiber based laser applications that requires large core volumes with excellent homogeneity in refractive indices, but also chemical variety (in terms of high dopant concentrations, different dopants). A structural fiber variety requires dedicated large volume core material of reproducible and tailorable chemical composition. Established technologies such as modified chemical vapor deposition (MCVD) or crucible melting rely on complex thermal processing, and are limited in accessible chemistries, dopant concentration, achievable functionalities, and in case of MCVD in achievable core sizes. The current process development thus targets to overcome such draw-backs by including novel approaches to enable extreme material combinations, enhanced reactivity, or novel functions.
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Katrin Wondraczek, Florian Lindner, Martin Leich, Joerg Bierlich, Robert Müller, Roman Sajzew, Michael Duparre, Lothar Wondraczek, and Matthias Jaeger "Recent advances in fabrication of large volume doped fiber preform materials", Proc. SPIE PC13003, Fiber Lasers and Glass Photonics: Materials through Applications IV, PC130030C (20 June 2024); https://doi.org/10.1117/12.3022320
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KEYWORDS
Fabrication
Dopants
Refractive index
Silica
Oxides
Reproducibility
Sintering
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