激光技术, 2009, 33 (4): 400, 网络出版: 2010-03-11
高功率掺Yb3+大模场光纤放大器实验研究
Experiment study of the high power Yb-doped large-mode-area fiber amplifier
光纤光学 掺Yb3+光纤 大模场光纤放大器 数值模拟 巨脉冲 fiber optics Yb-doped fiber large-mode-fiber amplifier simulation giant pulse
摘要
为了研究高功率光纤放大器的工作特性,采用两级光纤放大器对整形脉冲进行放大,得到放大后的脉冲能量为10μJ、峰值功率为2.4kW。发现当抽运功率高于1.4W时,输出功率变得很不稳定,甚至出现了能量很高的巨脉冲。模拟了掺Yb3+大模场光纤放大器,模拟结果与实验结果吻合较好。结果表明,信号光峰值功率放大到几千瓦时尚未饱和,光纤内仍有很多剩余储能,重新对放大器的设计进行优化,可以获得更高的能量。
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.
黄小东, 张小民, 李明中, 王建军, 张锐, 赵圣之, 车雅良, 许党朋. 高功率掺Yb3+大模场光纤放大器实验研究[J]. 激光技术, 2009, 33(4): 400. HUANG Xiao-dong, ZHANG Xiao-min, LI Ming-zhong, WANG Jian-jun, ZHANG Rui, ZHAO Sheng-zhi, CHE Ya-liang, XU Dang-peng. Experiment study of the high power Yb-doped large-mode-area fiber amplifier[J]. Laser Technology, 2009, 33(4): 400.
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