title: Pump-signal combiner with large-core signal fiber feed-through for fiber lasers and amplifiers.
abstract: A pump-signal combiner with a new processing method is reported in this paper. The core deformation of the signal fiber can be avoided by this method, and an 8+1 to 1 pump-signal combiner with 100 μm core-signal fiber feed-through is fabricated. The pump and signal coupling efficiencies are 96.8% and 98.0%, respectively. Furthermore, this pump-signal combiner is applied to a CW large mode area fiber laser with a counter pump configuration. The output power of the laser is 87 W.
authors: Center for Photonics and Electronics, State Key Laboratory of Tribology, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China.
authors: Qirong
authors: Q
authors: Xiao
authors: Pin
authors: P
authors: Yan
authors: Haicui
authors: H
authors: Ren
authors: Xiao
authors: X
authors: Chen
authors: Mali
authors: M
authors: Gong