It needs a down-collimator to convert big beams of a large laser facility into smaller beams in diameter to fit measurement instruments in diagnostic system.
大型激光装置中的参数诊断系统需要使用缩束系统，将被测脉冲转换为小口径光束，以匹配相应的参数测量仪器。
An online inspection apparatus of optics damage in large scale laser facility is developed applying dark-field imaging technology. Experiments were carried out on a multi-pass amplifier.
利用暗场成像原理，研制成功一套应用于大型激光装置的光学元件损伤在线检测装置，并在多程放大系统上进行了实验研究。
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