红外与毫米波学报2026，Vol.45Issue(1)：125-136,12.DOI:10.11972/j.issn.1001-9014.2026.01.014
腔增强吸收光谱氧气组分浓度测量装置及实验研究
Cavity-enhance absorption spectroscopy for the measurement of Oxygen concentration
摘要
Abstract
A high-performance oxygen detection system enables real-time online monitoring of critical parameters such as oxygen concentration and flow velocity inside the engine,thereby ensuring optimal operational performance.In flow field testing for engines such as scramjets and aircraft engines,the complex environment—characterized by high temper‐atures,high pressures,high velocities,and limited measurement space—poses significant challenges to high-perfor‐mance flow field diagnostics.To address these challenges,an oxygen concentration measurement device based on cavi‐ty-enhanced absorption spectroscopy(CEAS)was developed.The system incorporates an embedded optical probe structure and is equipped with multi-directional alignment stages at both the transmitter and receiver ends,enabling straightforward optical path adjustment and alignment for practical engineering applications.Experimental results indi‐cate that,under static conditions,the system measured an oxygen concentration of(20.846±0.97%),showing good agreement with the reference value.In shock tube experiments,although vibrations and airflow disturbances during op‐eration affected measurement accuracy,the system successfully captured three distinct states:before the arrival of the incident shock wave,after the incident shock wave passed but before the reflected shock wave arrived,and after the re‐flected shock wave passed.The measured trends in oxygen concentration align well with theoretical predictions.关键词
腔增强吸收光谱/氧气组分浓度/光学探头/激波管测量Key words
cavity-enhanced absorption spectroscopy/Oxygen concentration/optical probe/shock tube experiment分类
信息技术与安全科学引用本文复制引用
宋俊玲,饶伟,王林妍,朱晓辉,王殿恺,冯高平..腔增强吸收光谱氧气组分浓度测量装置及实验研究[J].红外与毫米波学报,2026,45(1):125-136,12.基金项目
国家自然科学基金(62175260),国家重点实验室基金(SKLLPA-202208) Supported by the National Natural Science Foundation of China(62175260),the State Key Laboratory of Laser Propulsion&Appli-cations(SKLLPA-202208) （62175260）
