Experimental study of photodarkening and photobleaching with 638 nm laser diode in ytterbium doped fibers

被引：0

作者：

Yu, Hailong ^{[1
]}

Wang, Xiaolin ^{[1
]}

Xiao, Hu ^{[1
]}

Zhou, Pu ^{[1
]}

Chen, Jinbao ^{[1
]}

机构：

[1] College of Opto-Electronic Science and Engineering, National University of Defense Technology, Changsha

来源：

Zhongguo Jiguang/Chinese Journal of Lasers | 2013年 / 40卷 / SUPPL期

关键词：

Fiber lasers; Photobleaching; Photodarkening; Ytterbium doped fibers;

D O I：

10.3788/CJL201340.s102008

中图分类号：

学科分类号：

摘要：

Photodarkening (PD) is recognized as an important factor that affects the reliability and lifetime of many fiber lasers and amplifiers. Temporal characteristics of the fiber laser and a self-recovery phenomenon with time dependence in darkened fibers are observed. A feasible method to measure PD is designed and several domestic fibers are tested. A 638 nm laser diode (LD) is utilized to bleach the darkened fiber. Experimental result indicates that the excess loss caused by PD can be considerably mitigated by 638 nm irradiation and one reasonable explanation is demonstrated.

引用

共 16 条

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