CARS燃烧诊断系统的时序控制器研究

研制了一台用于相干反斯托克思喇曼光谱CARS（Coher-ent Anti-Stokes Raman Scattering）相干反射系统的时序控制器，使激光发射同步输出脉冲与数采系统中LCI外触发输入脉冲电平匹配；可以选择采集同步发射的激光信号。其有单选、奇数、偶数、全选四种工作模式，可应用于单脉冲CARS实验，实现时间分辨光谱，同时还可以降低噪音，提高信噪比。

Study on sequential controller of CARS combustion diagnosis system

The sequential controller for CARS (Coherent Anti-Stokes Raman Scattering) system has been developed, which has two functions to match level of synchronous output pulse emitted from laser and level of LCI external trigger input pulse in data acquisition system,and to select acquisition of synchornous emission signal from laser.The sequential controller,which has four operation modes such as single selection,odd number,even number,and all selection,can be used for single pulse CARS test,realizing time-resolved spectrum,reducing noise and improving signal-to-noise ratio of CARS system.