Power scalability of a single-stage Yb-doped superfluorescent fiber source. (7th January 2016)

• Record Type: Journal Article
• Authors: An, Yingye; Yu, Yu; Cao, Jianqiu; Huang, Zhihe; Guo, Shaofeng; Chen, Jinbao
• Is Part Of: Laser physics letters. Volume 13:Number 2(2016:Feb.)
• Publication Date: 2016-01-07
• Subjects: cooperative phenomena -- superradiance and superfluorescence -- fiber lasers -- general laser theory; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-2011/13/2/025105
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: A high-power all-fiber broadband superfluorescent source is fabricated by using a distributed side-coupled cladding-pumped Yb-doped fiber. It is found experimentally that besides the optical feedback, the active fiber parameters have a significant effect on the power scaling. By optimizing the fiber length, a record amplified spontaneous emission output of 186.3 W is achieved, and the slope efficiency with respect to launched pump power is 78%. The bandwidths are larger than 20 nm. Furthermore, the power scalability of the superfluorescent source is analyzed numerically. The parasitic laser oscillation can be suppressed further with a large core to cladding ratio.