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本文对基于光注入半导体激光器的单周期动力学态产生光子微波并利用光反馈压缩其线宽进行了实验研究.研究结果表明:通过适当调节注入参数,能对该方法产生的光子微波频率在数十GHz范围内进行连续、大范围地调节;通过引入光反馈并精细调节反馈强度,光子微波的线宽能够从40-100 MHz的范围被压缩约两个数量级至300-900 kHz范围;反馈长度对光子微波的线宽几乎没有影响,但当反馈长度精细变化时,光子微波频率会出现一定范围内的周期性漂移.
In this paper, photonic microwaves are generated based on the single-cycle kinetics of light-implanted semiconductor laser and their linewidths are compressed by optical feedback.The experimental results show that the photon-microwave frequencies generated by the proposed method are Continuous and wide-range regulation in the range of 10 GHz; by introducing optical feedback and finely adjusting the feedback intensity, the linewidth of photonic microwaves can be compressed from the range of 40-100 MHz by about two orders of magnitude to the range of 300-900 kHz; the feedback length There is almost no effect on the linewidth of photonic microwaves, but when the feedback length varies minutely, the photon microwave frequency will exhibit periodic fluctuations within a certain range.