论文部分内容阅读
半导体激光器以其体积小、重量轻、成本低、驱动方便等明显优势,应用领域已经推广到激光探测,尤其是基于米散射理论的大气探测。根据小型化激光测云雷达大气探测的应用需求,选择了相应技术指标的半导体激光器模块,并为其设计了驱动电路(主要包括由同步计数器等构成的触发脉冲形成电路和由电压跟随器构成的激光脉宽/功率调节控制电路),解决了窄脉冲形成电路中常见的毛刺问题。在5kHz的重复频率下,对激光发射机的性能做了验证。结果表明,触发脉冲成型良好、频率稳定,激光发射脉冲半高宽度35～100ns线性可调、平均功率0～110mW线性可调,发射电路工作情况良好。
Semiconductor lasers with its small size, light weight, low cost, easy driving and other obvious advantages, the application has been extended to laser detection, especially based on the theory of atmospheric scattering meters scattering. According to the demand of atmospheric detection of miniaturized laser cloud detection radar, a semiconductor laser module with the corresponding technical indicators is selected and a driving circuit is designed for it (mainly including a trigger pulse forming circuit formed by a synchronous counter and the like and a voltage follower Laser pulse width / power adjustment control circuit) to solve the common glitch problem in narrow pulse forming circuits. The laser transmitter performance was verified at a repetition rate of 5 kHz. The results show that the triggering pulse is well formed and the frequency is stable. The half-width of the laser emission pulse is linearly adjustable from 35 ~ 100ns, the average power is 0 ~ 110mW linearly adjustable, and the transmitting circuit works well.