| 基于MgO: PPLN的高重频、高峰值功率中红外光参量振荡器 |
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| 引用本文： | 高宝光,孟冬冬,乔占朵,邱基斯.基于MgO: PPLN的高重频、高峰值功率中红外光参量振荡器[J].红外与激光工程,2022,51(10):20220069-1-20220069-6. |
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| 作者姓名： | 高宝光 孟冬冬 乔占朵 邱基斯 |
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| 作者单位： | 1.中国科学院空天信息创新研究院，北京 100094 |
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| 基金项目： | 天津市重点研发计划 (19YFZCGX00210) |
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| 摘 要： | 报道了一种基于周期性极化掺氧化镁铌酸锂晶体(MgO: PPLN)的高峰值功率、纳秒宽调谐中红外光参量振荡器(Optical parametric oscillation, OPO)。采用重复频率30~50 kHz、脉冲宽度小于4 ns的高光束质量1064 nm基频光泵浦基于极化周期为29 μm MgO: PPLN的OPO，当MgO: PPLN温度为80 ℃时获得30 kHz、脉宽1.19 ns、峰值功率48.45 kW的3.93 μm激光输出。在MgO: PPLN 温度区间为50~200 ℃时，中红外调谐输出波长为3.77~3.96 μm。根据实验结果分析讨论了不同重复频率下转换效率的特点、温度调谐特性与理论分析的一致性。
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| 关 键 词： | 光参量振荡器 周期性极化掺氧化镁铌酸锂晶体 中红外激光器 高峰值功率 |
| 收稿时间： | 2022-01-20 |
High repetition rate,high peak power mid-infrared optical parametric oscillator based on MgO: PPLN |
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| Affiliation: | 1.The Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China2.School of Optoelectronics, University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | A widely tunable mid-infrared optical parametric oscillator (OPO) with high peak power, nanosecond pulses output, which was based on MgO-doped periodically poled LiNbO3 (MgO: PPLN) was reported in this paper. The MgO: PPLN OPO with a domain period of 29 μm was pumped by a fundamental laser of 1064 nm with high beam quality, and the fundamental laser operated at the repetition rates from 30 kHz to 50 kHz with the pulses duration less than 4 ns. The 48.45 kW peak power, 1.19 ns, and 30 kHz pulses at 3.93 μm were obtained, as the temperature of MgO: PPLN was at 80 ℃. The tunable range of mid-infrared wavelength was from 3.77 μm to 3.96 μm, as the temperature of MgO: PPLN was from 50 ℃ to 200 ℃. According to the experimental results, the characteristics of conversion efficiency and temperature tuning characteristics under different repetition rates were analyzed and discussed. |
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