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采用较强的外注入光锁定FP激光器,获得了理想的强度噪声抑制效果.在自由运转的FP激光器的弛豫振荡峰处,最大噪声抑制强度可达9dB.研究了注入光功率和频率失谐对于强度噪声抑制效果的影响.此外,通过实验研究了理想噪声抑制范围与激光器稳定锁定范围之间的关系:它们都随着注入光功率的增加而增大;但在相同的注入光功率下,稳定锁定范围允许更大的频率失谐.
The strong external injection-locked FP laser is used to obtain the ideal intensity-noise suppression effect.The maximum noise suppression intensity can reach 9 dB at the relaxation oscillation peak of a free-running FP laser.It is shown that the power and the frequency of the injected laser are detuned On the effect of intensity noise suppression.In addition, the relationship between the ideal noise suppression range and the laser stable locking range is studied experimentally: they both increase with the increase of the injected optical power; but under the same injected optical power, Stable locking range allows greater frequency detuning.