【摘要】 开发了一种基于体相位全息（VPH）透射光栅的双偏振自发拉曼光谱测量系统，实现在燃烧场中单脉冲激光下同步定量测量主要气态物种组分（二氧化碳CO₂、氧O₂、氮N₂、水H₂O、燃料及中间体C_xH_y）浓度和温度，同步测量的温度可修正其对物种拉曼散射截面的影响。系统中的两套光栅和ICCD相机可同步采集两个互相垂直方向的拉曼散射偏振信号，有效剔除荧光干扰。在可控压力及温度的气样池和McKenna标准火焰燃烧器进行了浓度和温度的标定，温度测量精度小于1.06%,组分浓度测量精度小于1.10%。在某航空发动机模型燃烧室燃烧场中，完成了单工况三维多测点组分浓度和温度的同步单脉冲（20 ns）定量测量。更多还原

【Abstract】 A dual-polarization spontaneous Raman spectroscopy measurement system based on volume phase holographic transmission grating（VPH） has been developed, which enables synchronous quantitative measurement of the concentration and temperature of major gaseous species components（carbon dioxide CO₂, oxygen O₂, nitrogen N₂, water H₂O, fuel, and intermediates） under a single laser pulse in a combustion field. The temperature obtained synchronously can correct the influence of temperature on the Raman scattering cross-section of species. Two sets of ICCD cameras synchronously collect Raman scattering signals in two mutually perpendicular directions, effectively eliminating fluorescence interference. This system can also achieve a joint testing technology of Rayleigh temperature measurement and Raman concentration measurement. The concentration and temperature were calibrated on the gas sample pool with controllable pressure and temperature and the McKenna standard burner; the temperature measurement accuracy is less than 1.06%, and the accuracy of component concentration measurement is less than 1.10%. In the combustion field of an aero-engine model combustion chamber, the simultaneous measurement for a single pulse（20 ns） of component concentration and temperature at three multi-measurement points in a single working condition was completed.更多还原