Influence of laser linewidth on external-cavity frequency doubling efficiency of a 1.56 μm master oscillator fiber power amplifier
Influence of laser linewidth on external-cavity frequency doubling efficiency of a 1.56 μm master oscillator fiber power amplifier
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DOI：
10.1088/1674-1056/18/6/035
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发表时间：
2009-06
影响因子：
1.7
通讯作者：
Tian Xiu-Tao;Li Yongmin;L. Qin;Zhang Kuanshou
中科院分区：
文献类型：
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作者：
Tian Xiu-Tao;Li Yongmin;L. Qin;Zhang Kuanshou
采用外腔倍频主振荡器光纤功率放大器（MOPA），获得了780 nm、700 mW的连续单频激光输出。结果表明，当种子激光器被光学锁定到共焦法布里-珀罗（F-P）腔的谐振频率时，倍频效率得到提高。这一现象可归因于1.56 μm激光线宽的变窄，并可用我们提出的理论模型进行解释。实验结果与理论预测吻合较好。
By using an external-cavity frequency-doubling master oscillator fiber power amplifier (MOPA), a 700 mW continuous-wave single-frequency laser source at 780 nm is produced. It is shown that the frequency doubling efficiency is improved when the seed diode laser is optically locked to a resonant frequency of a confocal Fabry–Perot (F–P) cavity. This phenomenon can be attributed to the narrowing of the 1.56 μm laser linewidth and explained by our presented theoretical model. The experimental results are found to be in good agreement with the theoretical predictions.