126 W fiber laser at 1018 nm and its application in tandem pumped fiber amplifier. (18th November 2016)

• Record Type: Journal Article
• Authors: Yang, Hening; Zhao, Wei; Si, Jinhai; Zhao, Baoyin; Zhu, Yonggang
• Is Part Of: Journal of optics. Volume 18:Number 12(2016:Dec.)
• Publication Date: 2016-11-18
• Subjects: fiber laser and amplifier -- 1018 nm laser -- tandem pumping -- double clad ytterbium-doped fiber; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8978/18/12/125801
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: We report on a 126 W fiber laser operating at 1018 nm with an optical efficiency of 75%. The optimal length for such a fiber laser is theoretically analyzed using steady-state rate equations including amplified spontaneous emission. Excellent agreement on the maximum output power is achieved between the numerical result and the experimental counterpart. Furthermore, a monolithic tandem pumped fiber amplifier is established by using conventional 30/250 μ m double clad ytterbium-doped fiber, and 185 W output power with 85% optical efficiency is realized.