302 W triple-frequency, single-mode, linearly polarized Yb-doped all-fiber amplifier. (15th December 2017)

• Record Type: Journal Article
• Authors: Zhao, Xiang; Yang, Yifeng; Shen, Hui; Chen, Xiaolong; Bai, Gang; Zhang, Jingpu; Qi, Yunfeng; He, Bing; Zhou, Jun
• Is Part Of: High power laser science and engineering. Volume 5(2017)
• Publication Date: 2017-12-15
• Subjects: fiber laser and applications, -- nonlinear optics; High power lasers -- Periodicals; 621.366
• DOI: 10.1017/hpl.2017.29
• Languages: English
• ISSNs: 2095-4719

Abstract

Abstract : Stimulated Brillouin scattering (SBS) effect is currently the major limitation for the power scaling of single-frequency/narrow linewidth fiber laser systems. A single-mode linearly polarized all-fiber amplifier system is set up to investigate SBS effect in triple-frequency high-power amplifiers. With this amplifier, up to 302 W output power with 83% slope efficiency is achieved and the SBS threshold is scaled up to 12 dB. To the best of our knowledge, this is the highest output power of multifrequency laser from a single-mode polarization maintaining fiber. Good spectral properties and high brightness make this laser source available for the application of second harmonic generation, coherent beam combining.