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Proceedings Paper

Linear inner cladding fiber amplifier suppressing mode instability
Author(s): Zebiao Li; Zhihua Huang; Honghuan Lin; Shanhui Xu; Zhongmin Yang; Jianjun Wang; Feng Jing
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Paper Abstract

We use a semi-analytical model considering pump power saturation in high power fiber laser systems of multi-kW-class to calculate mode instability threshold. A novel designed fiber, linear inner-cladding fiber, can mitigate mode instability effect by decreasing nonlinear coupling coefficient and smoothing heat profile along the fiber. We investigate strong pump absorption of linear inner-cladding fiber, leading to shorter fiber length. With 915 nm pumping, linear inner-cladding fiber can reach 10 kW output power without mode instability in theory.

Paper Details

Date Published: 9 November 2016
PDF: 6 pages
Proc. SPIE 10016, High-Power Lasers and Applications VIII, 100160T (9 November 2016); doi: 10.1117/12.2245848
Show Author Affiliations
Zebiao Li, South China Univ. of Technology (China)
China Academy of Engineering Physics (China)
Zhihua Huang, China Academy of Engineering Physics (China)
Honghuan Lin, China Academy of Engineering Physics (China)
Shanhui Xu, South China Univ. of Technology (China)
Zhongmin Yang, South China Univ. of Technology (China)
Jianjun Wang, China Academy of Engineering Physics (China)
Feng Jing, China Academy of Engineering Physics (China)


Published in SPIE Proceedings Vol. 10016:
High-Power Lasers and Applications VIII
Ruxin Li; Upendra N. Singh; Robert F. Walter, Editor(s)

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