3Jeong Y,Sahu J K,Payne D N,et al.Ytterbium-doped large-core fiber laser with 1.36 kW continuous-wave output power.Optics Express,2004,12(25):6088-6092.
4Carter A,Samson B,Tankala K,et al.Damage mechanisms in components for fiber lasers and amplifiers.Proceedings of the Society of Photo-optical Instrumentation Engineers,2005,5647:561-571.
6Dong X,Qihong L,Jun Z.Comparison of Ybdoped fiber laser with one-end and double-end pumping configuration.Optics and Laser Technology,2005,39(4):871-874.