322W single-mode Yb-doped all-fiber laser operated at 1120 nm

被引：21
|
作者：
Zhang, Hanwei [1 ]
Xiao, Hu [1 ]
Zhou, Pu [1 ]
Zhang, Kun [1 ]
Wang, Xiaolin [1 ]
Xu, Xiaojun [1 ]
机构：
[1] Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Hunan, Peoples R China
来源：
APPLIED PHYSICS EXPRESS | 2014年 / 7卷 / 05期
关键词：
23;
D O I：
10.7567/APEX.7.052701
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
An all-fiber, high-power, spectrally clean, single-mode Yb-doped fiber oscillator at 1120 nm wavelength is demonstrated. By optimizing the reflectivity of the output coupler and the length of the gain fiber, an output power of 322W and an optical efficiency of 71% have been achieved. The output power, spectra, and bandwidth broadening are presented and briefly discussed. The power scaling capability of the cavity is analyzed on the basis of the thermal effect, and a maximal thermal-damage-free output power of 450W could be expected. (C) 2014 The Japan Society of Applied Physics
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页数：4
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