Supermode emission in four-core optical fiber amplifier doped with Yb3+. (9th March 2017)

• Record Type: Journal Article
• Authors: Liu, Yehui; Wang, Yibo; Liao, Lei; Luo, Xing; Hu, Xiongwei; Zhang, Fangfang; Li, Haiqing; Peng, Jinggang; Yang, Lvyun; Li, Jinyan
• Is Part Of: Laser physics letters. Volume 14:Number 4(2017:Apr.)
• Publication Date: 2017-03-09
• Subjects: four-core fiber -- phase-locked -- amplifier -- supermode; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-202X/aa63b8
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: We demonstrate a high power four-core Yb-doped fiber amplifier both theoretically and experimentally. An all-fiber MOPA structure without mode selection components was utilized to amplify the 12 m long four-core fiber. An in-phase supermode laser operation was realized in this fiber. The laser slope efficiency is greater than 56.7% with a maximum output power of 11.47 W. The measured M 2 factor of the amplified beam is 1.58, showing the high potential of the fiber.