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对单频光纤激光系统的输出噪声进行了测量和研究,利用前置光电负反馈方法对光纤激光器的强度噪声进行了抑制,调节反馈增益和延迟时间,可以在不同的边频处接近散离噪声极限,在分析频率6.0 MHz处抑制程度达到22 dB。
The output noise of single-frequency fiber laser system is measured and studied. Pre-optoelectronic negative feedback is used to suppress the intensity and noise of the fiber laser, and the feedback gain and delay time are adjusted. At the same time, The limit is 22 dB at 6.0 MHz of analysis frequency.