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Proceedings Paper

The slope efficiency of 2μm thulium doped fiber laser
Author(s): Ping Zhao; Jinglin Liu; Chujun Zhao; Hua Yang; Jianguo Wen
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Paper Abstract

In order to obtain high slope efficiency of 2 μm laser output, it is essential to design operating parameters of fiber laser prior to the experiment. Based on the rate equations, the pump and signal power equations of thulium doped fiber laser have been built. The effects of the cross relaxation coefficient K3101, the pump power filling factor Γp, the laser reflectivity of input mirror R3, the laser reflectivity of output mirror R4, and the Tm3+ concentration N of kilowatt level thulium doped fiber laser on the slope efficiency have been theoretically analyzed by an improved shooting algorithm. The results indicate that the slope efficiency decreases with the increasing laser reflectivity of output mirror, the pump power filling factor. Meanwhile, the slope efficiency increases with the increasing laser reflectivity of input mirror, the doping concentration and the cross relaxation coefficient, but the doping concentration and the cross relaxation coefficient have more obvious influence on the slope efficiency compared with the laser reflectivity of input mirror.

Paper Details

Date Published: 16 November 2010
PDF: 7 pages
Proc. SPIE 7843, High-Power Lasers and Applications V, 784306 (16 November 2010); doi: 10.1117/12.868620
Show Author Affiliations
Ping Zhao, Hunan Univ. (China)
Jinglin Liu, Hunan Univ. (China)
Chujun Zhao, Hunan Univ. (China)
Hua Yang, Hunan Univ. (China)
Jianguo Wen, Hunan Univ. (China)

Published in SPIE Proceedings Vol. 7843:
High-Power Lasers and Applications V
Upendra N. Singh; Dianyuan Fan; Jianquan Yao; Robert F. Walter, Editor(s)

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