论文部分内容阅读
实验研究了处于单周期振荡的光注入半导体激光器在频率等于单周期振荡频率一半的1/2次谐波调制下所产生的微波信号的特性.实验结果显示:在合适的注入条件下,处于单周期(P1)振荡的光注入半导体激光器可输出频率可达26.5 GHz、光谱具有单边带结构的光生微波信号,但微波信号的线宽比较宽(MHz量级);通过采用频率为单周期振荡频率一半的次谐波信号调制光注入半导体激光器,可将微波线宽从十几MHz压缩到几十k Hz.进一步分析了次谐波调制信号的功率以及频率对微波信号的相位噪声的影响,并在由次谐波调制信号的功率和频率构成的参数空间绘制出了能实现次谐波频率锁定的分布区域.
The characteristics of the microwave signal generated by a single-cycle oscillating light-injected semiconductor laser under the ½th harmonic modulation whose frequency is equal to one-half of the single-cycle oscillation frequency are experimentally studied.The experimental results show that under the proper injection conditions, The periodical (P1) oscillated light is injected into the semiconductor laser to output a photo-generated microwave signal with a frequency of 26.5 GHz and a single sideband structure, but the microwave signal has a relatively wide line width (in the order of MHz). By using a single-period oscillation The frequency half of the harmonic signal modulated light into the semiconductor laser, the microwave linewidth compressed from a dozen MHz to tens of k Hz further analysis of the power and frequency of sub-harmonic modulation signal on the phase noise of the microwave signal, And the distribution area that can achieve sub-harmonic frequency locking is drawn in the parameter space formed by the power and frequency of the sub-harmonic modulation signal.