可调谐二极管激光吸收光谱诊断技术：原理和应用

摘要

Tunable diode laser absorption spectroscopy ( TDLAS) is a kind of non⁃intrusive spectroscopy⁃based diagnostics, which has been widely used in high temperature gas dynamics research for ground test facilities. The state of the art of TDL⁃based sensors and their applications for measurements of temperature were reviewed, and species concentrations of gas com⁃ponents in high temperature reactive environments were given in this paper. Particularly, various schemes of absorption de⁃tection strategy ( direct absorption measurements, wavelength modulation) and related systems were discussed in detail. The recent applications of TDL⁃based sensors in supersonic combustion, Mars reentry condition and space propulsion research were demonstrated in the final part of the paper.%可调谐二极管激光吸收光谱技术是一种非接触的光谱诊断技术，已经广泛应用于高温气动研究中。文章对吸收光谱的发展和应用于高温反应环境温度和组分浓度的测量进行了回顾。对不同的吸收测量策略以及相应的系统组成进行了详细介绍，最后介绍了应用吸收光谱技术研究超声速燃烧火星再入以及空间推进系统的详细结果。