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, Sinem Yilmaz, Christoph Ottenhues, Christoph Ottenhues, Thomas Theeg, Thomas Theeg, Samir Lamrini, Samir Lamrini, Karsten Scholle, Karsten Scholle, Michael Schäfer, Michael Schäfer, Peter Fuhrberg, Peter Fuhrberg, Hakan Sayinc, Hakan Sayinc, Fatih Ömer Ilday, Fatih Ömer Ilday, Jörg Neumann, Jörg Neumann, Ludger Overmeyer, Ludger Overmeyer, Dietmar Kracht, 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); doi: 10.1117/12.2212632; https://doi.org/10.1117/12.2212632
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