基于飞秒啁啾探测脉冲相干反斯托克斯拉曼散射的非稳态燃烧场温度测量  

Femtosecond Chirped-Probe-Pulse Coherent Anti-Stokes Raman Scattering for Thermometry in Dynamic Combustion Fields

作　　者：葛慧 云胜 章媛 宋凯元 王伟 张盛 夏元钦 Ge Hui;Yun Sheng;Zhang Yuan;Song Kaiyuan;Wang Wei;Zhang Sheng;Xia Yuanqin(Hebei Key Laboratory of Advanced Laser Technology and Equipment,Center for Advanced Laser Technology,School of Electronic and Information Engineering,Hebei University of Technology,Tianjin 300401,China;National Key Laboratory of Science and Technology on Tunable Laser,School of Astronautics,Harbin Institute of Technology,Harbin 150080,Heilongjiang,China)

机构地区：[1]河北工业大学电子信息工程学院先进激光技术研究中心,河北省先进激光与装备重点实验室,天津300401 [2]哈尔滨工业大学航天学院可调谐(气体)激光技术国家级重点实验室,黑龙江哈尔滨150080

出　　处：《光学学报》2024年第21期296-306,共11页Acta Optica Sinica

基　　金：国家自然科学基金(62375074)。

摘　　要：飞秒相干反斯托克斯拉曼散射光谱具有高时空分辨率、高精确度以及高光谱采集效率,是获得高温湍流燃烧场温度信息的高效工具。针对非稳态高温燃烧场的测温需求,利用飞秒啁啾探测脉冲整形相干反斯托克斯拉曼散射测温方法,对稳态和非稳态火焰在时间分辨为1 ms时分别进行温度测量,测量结果与热电偶以及文献报道的结果符合较好,其准确度达到1.5%,精确度达到4%,对动态高温燃烧场实现了毫秒级温度监测,验证了飞秒啁啾探测脉冲相干反斯托克斯拉曼散射光谱在高温非稳态火焰温度测量的准确度和精度的优异性。为大型航空发动机和超声速发动机进行高速温度测量,以及对自制小型高温燃烧装置进行温度标定和性能研究提供了一种可行的方法。Objective As China enters the middle and late stages of industrialization,there is an urgent need to advance energy system reform.Given the various challenges,transitioning to new clean energy sources as a primary energy supply in the short term is difficult.Therefore,enhancing the combustion efficiency of traditional energy sources and reducing combustion pollutants is crucial for advancing ecological civilization.Accurately understanding the chemical reaction kinetics and basic physics of combustion is key to designing and developing efficient combustion systems.Temperature plays a critical role in combustion efficiency and the formation of combustion products.Precise temperature measurement and regulation of the combustion state help minimize harmful exhaust gases such as carbon monoxide(CO)and oxides of nitrogen(NO_(x)),while also improving combustion efficiency and saving energy.However,practical applications involve dynamic high-temperature combustion fields,which present challenges for temperature measurement methods in terms of time resolution,spatial resolution,accuracy,stability,and response speed.Traditional contact temperature measurement methods struggle to meet these requirements.Methods Coherent anti-Stokes Raman scattering(CARS)is a significant laser diagnostic technique for high-temperature gas or flame measurements.Nanosecond CARS thermometry is well-established,but its limitations,such as inelastic molecular collisions and low frequency,make it unsuitable for rapidly changing combustion fields like high-temperature turbulent flames.With the advent of femtosecond(fs)laser,femtosecond CARS has increasingly applied.This technique offers high spatiotemporal resolution,accuracy,and spectral acquisition efficiency,making it an efficient tool for measuring temperatures in complex dynamic high-temperature combustion fields.The coupled wave equation,incorporating material equations and medium susceptibility,is solved to derive the electric field of the CARS spectrum and establish the theoretical model.B

关 键 词：超快光学 非线性光学的诊断应用 飞秒相干反斯托克斯拉曼散射 非稳态燃烧 温度测量 

分 类 号：O433.5[机械工程—光学工程]