Due to the excellent modulation characteristics of laser diode (LD), the infused current of the LD is modulated to make the intensity of the laser beam change with the modulation signal.

本文利用半导体激光器良好的调制特性，对其注入电流进行调制，使激光器输出光强随调制信号变化。

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The deeper of the modulation depth of defects that modulated the beam, the higher of the intensity produced along the propagation process.

结果表明，不同调制尺寸、调制深度对高斯光束在传输过程中的影响相似。

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The influence of the size and the modulation amplitude of the defects on the intensity distribution and angular spectrum of the beam is also studied.

详细研究了振幅调制型“缺陷”的尺寸大小及调制幅度对受调制光束的光强分布和角谱影响。

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