在使用高功率激光装置进行物理实验时,高精度时间同步的时标系统是实现物理过程精确诊断的必要条件。为了满足物理实验需求,该系统采用任意波形发生器输出信号时分复用结合高速电光调制的技术方案,同源产生了主激光、时标光、电时标和高精度触发信号等多路信号。时标系统共可输出532,355,266 nm三种波长共10路梳状时标光信号及8路梳状电时标信号、两路快前沿高幅值触发信号。时标信号与主激光时间同步抖动峰峰值达到12.80 ps,梳状时标光信号脉冲周期峰值抖动为6.40 ps,接近目前采用的测量系统极限。完成了时标系统在高功率激光装置中的应用演示,满足了诊断设备应用要求;对条纹相机不同扫程进行时间基准标定实验,可有效校准相机大扫程的时间误差。

A high-precision time-synchronization fiducial system is necessary when using high-power laser drivers in physical experiments. To meet the demands of physical experiments, a time division multiplexing scheme based on an arbitrary waveform generator and high-speed electrooptic modulation is proposed. The time-synchronization fiducial system based on this scheme can generate multichannel signals, such as main laser, optic time fiducial lasers, electric time fiducial signals, and high-precision triggers. The proposed system can output 10 comb-shaped optic time fiducial lasers at three wavelengths, i.e., 532, 355, and 266 nm, 8 comb-shaped electric time fiducial signals, and two high-precision triggers with fast rise time and large amplitude. The peak-to-peak synchronization jitter value between the optic time fiducial laser and main laser is measured to be 12.80 ps, and the peak jitter of the optic time fiducial laser's period is 6.40 ps, which is close to the limit of the measurement system currently in use. A demonstration experiment of this system in a high-power laser driver is implemented to confirm that the system meets diagnostics requirements. Additionally, the time reference calibration of the streak camera's different scanning strokes is processed to effectively calibrate the time error of the camera in large sweeps.