Influence of laser linewidth on external-cavity frequency doubling efficiency of a 1.56 μm master oscillator fiber power amplifier

• 来源期刊: 中国物理B（英文版）
• 关键词: laser linewidrh external-cavity frequency doubling conversion efficiency
• 年，卷（期）: 2009,（6）
• 页码范围: 2324-2327
• 页数: 4页
• 语种: 英文

摘要

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.