Yılmaz, SinemOttenhues, C.Theeg, T.Lamrini, S.Scholle, K.Schafer, M.Fuhrberg, P.Sayınç, H.İlday, Fatih ÖmerNeumann, J.Overmeyer, L.Kracht, D.2018-04-122018-04-1220160277-786Xhttp://hdl.handle.net/11693/37674Date of Conference: 13-18 February 2016Conference Name: SPIE LASE, 2016Spectral 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-house-made 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%.EnglishFiber lasersLaser beam combiningThulium doped fiber lasersCombining efficiencyContinuous-wave powerEmission wavelengthConference Paper10.1117/12.2212632