| 基于瑞利散射和布里渊散射的自调Q双包层掺镱光纤激光器研究 |
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| 引用本文： | 黄琳,王淑梅.基于瑞利散射和布里渊散射的自调Q双包层掺镱光纤激光器研究[J].红外与激光工程,2015,44(12):3517-3524. |
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| 作者姓名： | 黄琳 王淑梅 |
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| 作者单位： | 1.烟台大学 光电信息科学技术学院 先进功能材料与光学工程研究中心,山东 烟台 264005 |
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| 基金项目： | 国家自然基金(10974168);山东省高校科技计划(J09LA06) |
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| 摘 要： | 结合光纤干涉环原理和受激布里渊散射效应数值求解描述双包层掺镱光纤激光器的速率方程,得到构建光纤干涉环的耦合器耦合率及泵浦功率与输出脉冲重频的关系;进一步采用掺镱双包层光纤激光器中光子数守恒的半数值模型得到耦合器耦合率、泵浦功率与输出平均功率、脉冲能量的关系。实验测试了不同泵浦功率对输出平均功率和脉冲能量的影响,实验结果与仿真结果吻合。研究表明:提高泵浦功率只能提高脉冲重复频率和平均功率,并不能提高脉冲能量;选择合适耦合率的耦合器构建光纤干涉环才能获得较高脉冲能量;泵浦功率较高时会激发二阶斯托克斯光脉冲。
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| 关 键 词： | 光纤激光器 光纤干涉环 瑞利散射 受激布里渊散射 |
| 收稿时间： | 2015-04-05 |
Investigation of self-Q-switched ytterbium-doped double-clad fiber lasers based on Rayleigh scattering and stimulated Brillouin scattering |
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| Affiliation: | 1.Research Center of Advanced Functional Materials and Optical Engineering,Institute of Photoelectric Information Science and Technology,Yantai University,Yantai 264005,China |
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| Abstract: | The rate equations of ytterbium-doped double-clad fiber lasers were solved by numerical simulation under principles of fiber interference loop and stimulated Brillouin scattering. The relationships between pulse repetition rate, pump power and couple ratio of the coupler which constructed the fiber interference loop were obtained. The relationships between average output power, pulse energy, pump power and couple ratio were also obtained by exploiting the model based on photon balance. A self-Q-switched Yb3+-doped double-clad fiber laser was employed experimentally to test how the pump power affect average power, pulse energe and pulse repetition rate respectively. The results show that both average power and pulse repetition rate can be increased by increasing pump power, and the increase of pulse energy needs to choose appropriate couple ratio other than the increase of pump power. It also shows that the second-order Stokes pulse will be stimulated if the pump power is high enough. |
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