脉冲式激光雷达探测性能与激光光源发出的光脉冲密切相关，而激光二极管(LD)驱动电路性能直接决定了光脉冲的优劣。基于激光雷达系统要求，选用超快速金属氧化物半导体场效应管(MOSFET)作为开关器件，建立驱动电路模型，对驱动电路设计与分析，经过多次试验，成功设计出最小脉宽10 ns，上升沿3.5 ns，重复频率可达50 kHz的LD驱动电路。驱动LD峰值功率将近60 W，成功用于激光雷达光源部分，测距精度达到3 cm/10.77 m，满足激光雷达系统要求。

Pulsed laser radar detection performance is associated with laser optical pulse emitted by laser light source, and the performance of power supply directly determines the quality of optical pulse. According to the requirements of laser radar system, the high power MOSFET was used as switching device and the driving circuit model was established, designed and analyzed. The driving circuit with 10 ns minimum pulse width, 3.5 ns rising time and 50 kHz pulse repetition frequency was obtained successfully after much experiments. The optical peak power of LD nearly reached 60 W, and it was successfully applied in laser radar as laser emission part. The 3 cm/10.77 m accuracy can satisfy the requirement of a laser radar.