We report on a detailed analysis of the effect of CW injection in an actively mode-locked laser at 780 nm, on the noise performances of the laser. The optical properties of the emitted pulse train, and the phase and amplitude noise of the RF pulse train generated after photodetection have been characterized with respect to the laser pumping rate, and to the injected power. We show that when injected, the laser exhibits a dramatic improvement of both RF phase noise and power spectrum, but at the expense of a degraded optical relative intensity noise.

中文翻译：

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外部连续波光学注入主动锁模激光器动态特性和降噪的实验研究

我们报告了在780 nm的主动锁模激光器中连续波注入对激光器噪声性能的影响的详细分析。相对于激光泵浦速率和注入功率，已表征了发出的脉冲序列的光学特性以及在光电检测之后生成的RF脉冲序列的相位和幅度噪声。我们显示出，当注入时，激光器展现出射频相位噪声和功率谱的显着改善，但以降低的光学相对强度噪声为代价。