光纤激光泵浦MgO：PPLN高功率中波红外光参量振荡器

何洋; 陈飞; 万浩华; 季艳慧

doi:10.11884/HPLPB202234.210308

光纤激光泵浦MgO：PPLN高功率中波红外光参量振荡器

doi: 10.11884/HPLPB202234.210308

何洋^1,,
陈飞¹,
万浩华^{1, 2},
季艳慧^{1, 2}

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
2.
中国科学院大学，北京 100049

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）

详细信息

作者简介:
何　洋，heyang_3g@126.com

中图分类号: TN248.1
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- 被引次数: 0
出版历程
- 收稿日期: 2021-07-22
- 修回日期: 2021-10-28
- 网络出版日期: 2021-09-15
- 刊出日期: 2022-01-13

Fiber-laser-pumped high-power mid-infrared optical parametric oscillator based on MgO: PPLN crystal

He Yang^1
,,
Chen Fei¹,
Wan Haohua^{1, 2},
Ji Yanhui^{1, 2}

1.
State Key Laboratory of Laser Interaction with Matter, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

摘要

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。
- 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
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.
- optical parametric oscillator /
- MgO: PPLN crystal /
- Yb-doped fiber laser /
- mid-infrared laser /
- high-power

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图 1 YDFL泵浦MgO：PPLN-OPO实验装置图

Figure 1. Experimental setup of MgO: PPLN-OPO pumped by YDFL

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图 2 经过ISO后YDFL功率随第3级LD功率变化曲线及其光谱和光斑

Figure 2. YDFL power after ISO versus third stage LD power with insets show spectrum and beam profile

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图 3 最高输出功率下YDFL波形

Figure 3. Waveforms of YDFL with maximum output power

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图 4 （a）不同M4曲率半径下中波红外激光功率随泵浦功率的变化关系及（b）功率9.15 W时中波红外激光光谱

Figure 4. (a) Mid-infrared laser power as functions of pump power for different curvature radii of M4 and (b) mid-infrared laser spectrum with power of 9.15 W

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图 5 不同泵浦光束腰直径下中波红外激光功率随泵浦功率的变化关系

Figure 5. Mid-infrared laser power as functions of pump power for different pump waist diameters

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图 6 最高输出功率下中波红外激光波形

Figure 6. Waveforms of mid-infrared laser with maximum output power

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