| 光纤激光泵浦MgO:PPLN高功率中波红外光参量振荡器 |
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| 引用本文： | 何洋,陈飞,万浩华,季艳慧.光纤激光泵浦MgO:PPLN高功率中波红外光参量振荡器[J].强激光与粒子束,2022,34(3):031003-1-031003-5. |
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| 作者姓名： | 何洋 陈飞 万浩华 季艳慧 |
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| 作者单位： | 1.中国科学院 长春光学精密机械与物理研究所 激光与物质相互作用国家重点实验室，长春 130033 |
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| 基金项目： | 国家重点研发计划资助项目（2018YFE0203203）；;国家自然科学基金项目（62005274）； |
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| 摘 要： | 为实现高效率、高功率中波红外激光输出，研制基于MgO:PPLN晶体的中波红外光参量振荡器（OPO），泵浦源为基于主振荡功率放大（MOPA）结构的线偏振掺Yb光纤激光器（YDFL）。实验结果表明:YDFL可实现最高79.1 W的1064.1 nm脉冲线偏振激光输出；在YDFL泵浦下，通过优化输出镜曲率半径和泵浦光束腰直径，该OPO实现最高9.15 W的3.754 μm脉冲激光输出，光光转换效率为11.57%，重复频率为300 kHz，脉冲宽度约为110 ns。
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| 关 键 词： | 光参量振荡器 MgO:PPLN晶体 掺Yb光纤激光器 中波红外激光 高功率 |
| 收稿时间： | 2021-07-22 |
Fiber-laser-pumped high-power mid-infrared optical parametric oscillator based on MgO: PPLN crystal |
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| Institution: | 1.State Key Laboratory of Laser Interaction with Matter, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China2.University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | To achieve high-power mid-infrared laser output with high efficiency, the optical parametric oscillator (OPO) based on MgO: PPLN crystal is researched. The pump source is linearly polarized Yb-doped fiber laser (YDFL) with master oscillator power amplifier (MOPA) structure. Experimental results indicate that the YDFL can realize the pulse linearly polarized laser with the highest power of 79.1 W at 1064.1 nm. With the pump laser, the OPO obtains the maximum MIR power of 9.15 W at 3.754 μm by optimizing the curvature radius of output coupler and the pump waist diameter. The corresponding optical-to-optical conversion efficiency is 11.57%. The repetition rate and the pulse width of mid-infrared laser are 300 kHz and ～110 ns, respectively. |
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