Midilli, YakupEfunbajo, O. BenjaminŞimşek, BartuOrtaç, Bülend2020-01-282020-01-2820199781728104706http://hdl.handle.net/11693/52852Date of Conference: 23-27 June 2019Conference Name: 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019Fibers lasers have attracted great attention in the last decades and the power scaling has reached tens of kW levels. Especially with the tandem pump configuration, pumping the active medium with a pump laser light instead of a diode laser, has made a breakthrough and so many research has been conducted about 1018 nm fiber laser systems [1]. Decreasing the quantum defect, the slope efficiency could be increased up to 90 % levels; on the other hand, due to the emission cross section of the Ytterbium (Yb), to operate the laser in the 1018 nm wavelength region is very challenging because of the presence of the ASE about the 1030 nm region. However, in the literature by using 976 nm pump diodes multi-hundred watts level 1018 nm fiber lasers could be demonstrated [2, 3].EnglishLaser excitationFiber lasersPump lasersSemiconductor lasersPower lasersOptical fibersConference Paper10.1109/CLEOE-EQEC.2019.88725959781728104690