Experiment study of the high power Yb-doped large-mode-area fiber amplifier

HUANG Xiao-dong; ZHANG Xiao-min; LI Min-zhong; WANG Jian-jun; ZHANG Rui; ZHAO Sheng-zhi; CHE Ya-liang; XU Dang-peng

doi:10.3969/j.issn.1001-3806.2009.04.019

In order to study the property of high power fiber amplifiers,the output energy of 10μJ and the peak power of 2.4kW were obtained respectively after the shaped signal pulse is amplified by a two-stage fiber amplifier. However,the pump power was larger than 1.4W,the output energy became unstable and giant pulse was detected. It was found that the output signal was not saturated and there was lots of residual energy in the fiber even the output signal was large up to a few kW. Higher power can be obtained if the design of the fiber amplifier was optimized. The Yb-doped large-mode-area fiber amplifier was simulated, and the result was identical with the experiment result.

Experiment study of the high power Yb-doped large-mode-area fiber amplifier

Corresponding author: HUANG Xiao-dong, ssam19840328@163.com;

1. Department of Engineering Optics, Shandong University, Ji'nan 251000, China;

2. Research Center of Laser Fusion, ChinaAcademy of Engineering Physics, Mianyang 621900, China

Received Date: 2008-04-21

Accepted Date: 2008-08-26

Available Online: 2009-08-25

Abstract: In order to study the property of high power fiber amplifiers,the output energy of 10μJ and the peak power of 2.4kW were obtained respectively after the shaped signal pulse is amplified by a two-stage fiber amplifier. However,the pump power was larger than 1.4W,the output energy became unstable and giant pulse was detected. It was found that the output signal was not saturated and there was lots of residual energy in the fiber even the output signal was large up to a few kW. Higher power can be obtained if the design of the fiber amplifier was optimized. The Yb-doped large-mode-area fiber amplifier was simulated, and the result was identical with the experiment result.

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Reference (8)

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Experiment study of the high power Yb-doped large-mode-area fiber amplifier

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References

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通讯作者: 陈斌, bchen63@163.com

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