Klenke, A.A.KlenkeMuller, M.M.MullerStark, H.H.StarkStutzki, F.F.StutzkiHupel, C.C.HupelSchreiber, T.T.SchreiberTünnermann, A.A.TünnermannLimpert, J.J.Limpert2022-03-142022-03-142018https://publica.fraunhofer.de/handle/publica/40606610.1364/ASSL.2018.AM2A.72-s2.0-85059484816We present a multicore fiber based amplifier that is suitable for coherent combination of broadband pulses supporting 250 fs duration. A combination efficiency of 80% could be maintained up to the maximum average power of 105 W.en620conference paper