We demonstrate time-resolved simultaneous measurements of multiple hydrocarbons in high-temperature reacting and non-reacting mixtures using a broadband (instantaneous bandwidth 2.80–3.57 µm) subharmonic mid-infrared optical parametric oscillator based on orientation-patterned gallium phosphide. High-temperature absorption spectra and concentration time-histories of methane, ethane, and ethylene are measured at pressures around 2.3–2.7 atm and temperatures around 1235–1277 K in shock tube experiments.

中文翻译：

---

用于反应系统中动态高温多物种测量的宽带中红外光学参量振荡器

我们演示了使用基于定向图案化的磷化镓的宽带（瞬时带宽2.80-3.57 µm）亚谐波中红外光学参量振荡器，在时间上同时测量高温反应和非反应混合物中的多种烃。在冲击管实验中，在约2.3–2.7 atm的压力和约1235–1277 K的温度下测量了甲烷，乙烷和乙烯的高温吸收光谱和浓度时程。