摘要
模拟分析了在不同入射泵浦光半径下MgO:PPLN晶体的热分布,考虑晶体在工作时中心轴线附近产生的温度升高现象,引入晶体升温参数t,分析优化了晶体温度调谐曲线。实验中研究了MgO:PPLN光参量振荡(OPO)的逆转换现象,分析了腔镜的参量光反射率和最佳泵浦超阈值倍数的关系,讨论了晶体长度对OPO光-光转换效率的影响。通过优化实验,在温度范围为30~190℃内,测得信号光波长连续变化区间为1568.9~1659.8 nm,当泵浦功率为1.12 W、脉冲重复频率为15 kHz、温度为90℃时,得到最大平均功率为110 mW、波长为1595 nm的近红外激光输出。
In this study,the heat distributions of MgO∶PPLN crystals under different incident pump optical radii are simulated and analyzed.Considering the temperature rise phenomenon near the central axis of the crystal during operation,the crystal heating parameter t is added to optimize the crystal temperature tuning curve.The inverse conversion phenomenon of MgO∶PPLN optical parametric oscillation(OPO)is experimentally analyzed.Furthermore,the relationship between the parametric light reflectance of the cavity mirror and the optimal pump super-threshold multiple is investigated,and the effect of crystal length on the OPO conversion efficiency is analyzed.By optimizing the experiments,the continuous change range of the signal light wavelength in the temperature range of 30‒190℃ is measured to be 1568.9‒1659.8 nm.At a pump power of 1.12 W,repetition frequency of 15 kHz,and temperature of 90℃,the obtained nearinfrared laser output is 1595 nm with a maximum average power of 110 mW.
作者
王睿
汪水兰
蒋星晨
程德华
岱钦
Wang Rui;Wang Shuilan;Jiang Xingchen;Cheng Dehua;Dai Qin(School of Science,Shenyang Ligong University,Shenyang 110159,Liaoning,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2023年第13期268-273,共6页
Laser & Optoelectronics Progress
关键词
光参量振荡
温度调谐
光-光转换效率
逆转换
optical parametric oscillation
temperature tuning
optical-to-optical conversion efficiency
inverse conversion
