纳秒半导体激光器（LD）的时间抖动和多个LD并联触发的时间同步性是各类超快光电过程及应用中的重要参数。研究了纳秒脉冲LD（包括LD触发电路）的时间抖动特性以及2个LD的触发同步性。结果表明：纳秒LD（包括LD触发电路）的时间抖动与其驱动电路的驱动电压有关，均在亚纳秒量级范围。单只纳秒LD的时间抖动为72 ps，当1个LD驱动电路同时触发2个并联的纳秒LD时，每个纳秒LD的时间抖动增至约200 ps，2个并联纳秒LD的触发时间同步性近300 ps。

The time jitter of nanosecond semiconductor laser (LD) and the time synchronization of multiple LD parallel triggers are important parameters in various ultra-fast photoelectric processes and applications. In this paper, the time jitter characteristics of nanosecond pulse LD (with driving circuits) and the synchronization of two nanosecond LD triggers were studied. The results show that the time jitter of nanosecond LD (with driving circuits) is related to the voltage of driving circuits and is in the range of sub-nanoseconds. The time jitter of a single nanosecond LD is 72 ps, when a driving power supply simultaneously triggers two nanoseconds LD in parallel, the time jitter of each nanosecond LD increases to about 200 ps, and the time synchronization of two parallel nanosecond LD is about 300 ps.