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高功率激光系统的信噪比改进前采用光电导开关及示波器测试，因主脉冲信号太强（信噪比～１０６）冲击示波器．采用改进后的方法，大大降低了主脉冲信号幅度，有效地保护了测试仪器。
High-power laser system before the SNR improvement using photoconductive switch and oscilloscope test, because the main pulse signal is too strong (signal to noise ratio ~ 106) impact on the oscilloscope. The improved method greatly reduces the amplitude of the main pulse signal and effectively protects the test instrument.