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用与大型激光装置输出主激光脉冲同步的梳状脉冲作为时间标尺,标定强激光与靶丸作用的过程,对强场物理实验测量及模拟实现精密化具有重要的意义.报道了一种电光调制结合光学方法产生与主激光精确同步的多频率时标激光脉冲的光纤系统.采用电光调制产生150ps快光脉冲,通过光纤堆积产生1053nm的基频梳状脉冲信号,经过放大和倍频输出527和351nm的绿光及紫外倍频梳状脉冲激光.系统可稳定地为神光Ⅲ原型装置提供精密物理实验所必需的各种频率的时标激光,并且可根据物理实验需要灵活地调整梳状脉冲间隔和幅度,具有很好的适应性.
It is significant to calibrate the experiment of strong field physics and to realize the precision by using the comb pulse which is synchronized with the output of the main laser pulse from a large laser device as the time scale to calibrate the interaction between the intense laser and the target pill.An electro-optic modulation Combining optical methods to produce multi-frequency time-lashed laser pulses accurately synchronized with the main laser, optical pulses of 150ps are generated by electro-optic modulation and fundamental-frequency comb pulses of 1053nm are generated by optical fiber stacking. After amplified and multiplied output 527 and 351nm green and ultraviolet frequency comb pulsed laser.The system can stably provide the SGS prototype with various frequency time-lasers necessary for precision physics experiments, and can flexibly adjust the comb-pulse according to the physical experiment Interval and amplitude, with good adaptability.