2 kW pump-light-stripper-free distributed side-coupled cladding-pumped fiber oscillator. (5th May 2017)

• Record Type: Journal Article
• Authors: Ying, Hanyuan; Yu, Yu; Cao, Jianqiu; Huang, Zhihe; Pan, Zhiyong; Wang, Zefeng; Chen, Jinbao
• Is Part Of: Laser physics letters. Volume 14:Number 6(2017:Jun.)
• Publication Date: 2017-05-05
• Subjects: diode-pumped lasers -- fiber optics amplifiers and oscillators -- ytterbium-doped fiber; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-202X/aa6dc8
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: A 2 kW pump-light-stripper-free all-fiber distributed-pumping oscillator fabricated with the distributed side-coupled cladding-pumped Yb-doped fiber is demonstrated for the first time, to the best of our knowledge. An output power of 1969 W with a slope efficiency of 72.2% is obtained. By utilizing the final-section counter-pumping scheme, pure output spectra free from residual pump light are obtained without using any pump light stripper, which demonstrates that the pump light stripper is not indispensable for this configuration. Besides, no stimulated Raman scattering component is observed in the output spectra. The laser has the M 2 factor ranging from 2.0 to 2.6. We believe that the pertinent results are helpful and valuable for designing high-power fiber laser systems.