Opt Lett. 2018 Jun 15;43(12):2961-2964. doi: 10.1364/OL.43.002961.
Single-shot, two-color, volumetric laser-induced fluorescence was demonstrated for three-dimensional (3D), tomographic imaging of the structural properties of the OH radical and temperature field in a turbulent hydrogen-air flame. Two narrowband laser sources were tuned to the Q(5) and Q(14) transitions of the (1,0) band in the AΣ←XΠ system and illuminated a volumetric region of the flame. Images from eight unique perspectives collected simultaneously from each of the two transitions were used to reconstruct overlapping OH fields with different Boltzmann fractions and map the 3D temperature distribution with nanosecond precision. Key strategies for minimizing sources of error, such as detector sensitivity and spatial overlap of the two fields, are discussed.
单脉冲双色体层激光诱导荧光技术用于三维层析成像，可对湍氢-空气火焰中的 OH 自由基结构特性和温度场进行测量。两个窄带激光源调谐到 AΣ←XΠ 系统（1,0）带的 Q(5)和 Q(14)跃迁，并对火焰的体区域进行照明。从两个跃迁中各采集 8 个独特视角的图像，用于重构具有不同 Boltzmann 分数的重叠 OH 场，并以纳秒精度绘制 3D 温度分布。讨论了减小误差源的关键策略，如探测器灵敏度和两个场的空间重叠。
