Q-Switched large-mode-area Yb-doped fibre laser using GaAs as saturable absorber

被引：0
|
作者：
Fu Sheng-Gui [1 ]
Guo Zhan-Cheng [1 ]
Si Li-Bin [1 ]
Zhao Ying [1 ]
Yuan Shu-Zhong [1 ]
Dong, Xiao-Yi [1 ]
机构：
[1] Nankai Univ, Coll Informat Technol Sci, Tianjin 300071, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2007年 / 24卷 / 05期
关键词：
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A passive Q-switched large-mode-area Yb-doped fibre laser is demonstrated using a GaAs wafer as the saturable absorber. A high Yb doping concentration double-clad fibre with a core diameter of 30 mu m and a numerical aperture of 0.07 is used to increase the laser gain volume, permitting greater energy storage and higher output power than conventional fibres. The maximum average output power is 7.2 W at 1080 nm wavelength, with the shortest pulse duration of 580 ns and the highest peak power of 161 W when the laser is pumped with a 25 W diode laser operating at 976 nm. The repetition rate increases with the pump power linearly and the highest repetition rate of 77 kHz is obtained in the experiment.
引用
收藏
页码：1264 / 1266
页数：3
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