title: End-pumped 300 W continuous-wave ytterbium-doped all-fiber laser with master oscillator multi-stage power amplifiers configuration.
abstract: An end-pumped ytterbium-doped all-fiber laser with 300 W output in continuous regime was reported, which was based on master oscillator multi-stage power amplifiers configuration. Monolithic fiber laser system consisted of an oscillator stage and two amplifier stages. Total optical-optical efficiency of monolithic fiber laser was approximately 65%, corresponding to 462 W of pump power coupled into laser system. We proposed a new method to connect power amplifier stage, which was crucial for the application of end-pumped combiner in high power MOPAs all-fiber laser.
authors.affiliation: Department of Precision Instruments, State Key Laboratory of Tribology, Center for Photonics and Electronics, Tsinghua University, Beijing, China. pyan@mail.tsinghua.edu.cn
authors.forename: Shupeng
authors.initials: S
authors.lastname: Yin
authors.forename: Ping
authors.initials: P
authors.lastname: Yan
authors.forename: Mali
authors.initials: M
authors.lastname: Gong