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Proceedings Paper

Dynamic of Yb-doped double-clad fiber laser with different feedback
Author(s): Fuyun Lu; Shuling Hu; Yaxian Fan
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Paper Abstract

In this paper, the fiber laser with D-shaped inner cladding fiber is presented. The fiber laser has a second mirror which configuration is called two-mirror cavity to provide different feedback and to stabilize the output. The dynamics with different feedback 4%, 40%, 70% and 90%etc. are studied. In experiment, it obtained 2.32W output with 4% Fresnel reflection of the fiber. With different feedbacks it founds three thresholds, Pth is the laser threshold, pthB is for SBS (stimulated Brillouin scattering) in the fiber laser, and is for SRS (stimulated Raman scattering). The higher feedback level is, the lower threshold is. Also the PthB dynamics appear different characters with the increase of pump power. Under certain condition, the output is stable ns pulses. The pulses width has relationship with the feedback from the second mirror. The phenomena are analyzed quantitatively.

Paper Details

Date Published: 5 September 2002
PDF: 5 pages
Proc. SPIE 4914, High-Power Lasers and Applications II, (5 September 2002); doi: 10.1117/12.481802
Show Author Affiliations
Fuyun Lu, Nankai Univ. and War Traffic College of PLA (China)
Shuling Hu, Nankai Univ. (China)
Yaxian Fan, Nankai Univ. (China)

Published in SPIE Proceedings Vol. 4914:
High-Power Lasers and Applications II
Dianyuan Fan; Keith A. Truesdell; Koji Yasui, Editor(s)

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