[CWP4C] High Power, High Energy Lasers III

[CWP4C-03] 19 kW Output Power of Tandem Pumped APS Fiber Amplifier with Higher Ytterbium Concentration

*Changle Shen¹, Fengyun Li¹, Jiangyun Dai¹, Nian Liu¹, Honglei He¹, Fang Li¹, Lihua Zhang¹, Jiakun Lv¹, Lei Jiang¹, Honghuan Lin¹, Jianjun Wang¹, Feng Jing¹, Cong Gao¹ (1. Laser Fusion Research Center, China Academy of Engineering Physics (China))

[Presentation Style] Online

We report our recent work on power scaling of tandem pumped fiber laser up to 19 kW by increasing the doping concentration of ytterbium up to 0.3(mol)% and using larger core/clad ratio of 60/400.