锁相放大器在窄脉冲信号测量中的应用

Application of Lickin Amplitier Measuring Pulse Signal

从锁相放大器的选频放大相关接收直流放大的原理出发，理论分析了锁相放大器对脉冲信号测量时，输入信号与输出信号之间的关系，并用实验进行了证实．结论对用锁相放大器测量非正弦调制信号及脉冲激光信号具有重要意义．

The relation between an input and output measuring pulse signal on Lockin Amplifier is theoretically discussed according to the Lockin Amplifiers principle of selective frequency amplifyingphase related measuring demodulationdirect current amplifying,the conclusion is affirmed in experiment.This conclusion is of important significance to measure nonsine modulation signal and pulse laser signal in this way.