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9 March 2016 Single-mode spectral beam combining of high power Tm-doped fiber lasers with WDM cascades
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Abstract
Spectral beam combining of Tm-doped fiber lasers can increase the laser output power while simultaneously maintaining the single mode beam quality. We report on a spectral beam combining technique based on highly efficient in-housemade WDM cascade. We demonstrate continuous wave power combining employing a WDM cascade consisting of four fiber laser sources with emission wavelengths of 1920, 1949, 1996 and 2030 nm. A combined power of up to 38 W resulted in a combining efficiency of 69%.
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Sinem Yilmaz, Christoph Ottenhues, Thomas Theeg, Samir Lamrini, Karsten Scholle, Michael Schäfer, Peter Fuhrberg, Hakan Sayinc, Fatih Ömer Ilday, Jörg Neumann, Ludger Overmeyer, and Dietmar Kracht "Single-mode spectral beam combining of high power Tm-doped fiber lasers with WDM cascades", Proc. SPIE 9728, Fiber Lasers XIII: Technology, Systems, and Applications, 97280O (9 March 2016); https://doi.org/10.1117/12.2212632
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