[1] D J Richardson, J Nilsson, W A Clarkson. High power fiber lasers: current status and future perspectives. J Opt Soc Am B, 27, B63-92(2010).
[2] W Shi, Q Fang, X Zhu, et al. Fiber lasers and their applications. Appl Opt, 53, 6554-68(2014).
[3] Stiles E. New developments in IPG fiber laser technology[C] Proc 5th Int Wkshop Fiber Lasers, 2009.
[4] Q Fang, J Li, Shi Wei, et al. 5 kW near-diffraction-limited and 8 kW high-brightness monolithic continuous wave fiber lasers directly pumped by laser diodes. IEEE Photon J, 9, 1506107(2017).
[5] Biao Wang, Lu Pang, Yongqing Yi, . 3.2 kW laser output by domestic 25/400 μm Yb-doped fiber. Infrared & Laser Engineering, 48, 0706009(2019).
[6] H Lin, L Xu, C Li, et al. 10.6 kW high-brightness cascade-end-pumped monolithic fiber lasers directly pumped by laser diodes in step-index large mode area double cladding fiber. Results in Physics, 14, 102479(2019).
[7] X Chen, F Lou, Y He, et al. Home-made 10 kW fiber laser with high efficiency. Acta Optica Sinica, 39, 423-425(2019).
[8] Jianli Ma, Shiqi Jiang, Miao Yu, . kW fiber laser oscillator based on wavelength locking. Infrared & Laser Engineering, 45, 1105002(2016).
[9] J Nilsson, R Paschotta, J E Caplen, et al. Yb3+-ring doped fiber for high-energy pulse amplification. Opt Lett, 22, 1092-1094(1997).
[10] R Paschotta, J Nilsson, A C Tropper, et al. Ytterbium-doped fiber amplifiers. IEEE J Quantum Electron, 33, 1049-1056(1997).
[11] Y Wang, H Po. Dynamic characteristics of double-clad fiber amplifiers for high-power pulse amplification. Journal of Lightwave Technology, 21, 2262-2270(2003).
[12] J Zhu, P Zhou, Y Ma, et al. Power scaling analysis of tandem-pumped Yb-doped fiber lasers and amplifiers. Optics Express, 19, 18645-18654(2011).
