ABSTRACT Laser absorption spectroscopy (LAS) has been rapidly developed and widely applied to combustion diagnosis in recent decades. As a cost-effective tool for measuring multiple combustion parameters, LAS provides unique properties in terms of accuracy and sensitivity for understanding the reactions and kinetics in reactive flows. Line-of-sight and tomographic LAS techniques have stimulated numerous applications and been proved to be robust for in situ combustion diagnosis in uniform and non-uniform combustion fields, respectively. This review highlights the breakthroughs in the evolution of LAS techniques from the viewpoints of key principles, sensors and instrumentations developed for combustion diagnosis, with particular emphasis on a series of spatially-resolved LAS techniques with their recent applications on obtaining high-fidelity measurement results with minimal intrusion to the practical combustors. Along the way, we note some challenges and requirements for further development of the LAS-based combustion diagnosis.

中文翻译：

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用于反应流燃烧诊断的激光吸收光谱：综述

摘要 近几十年来，激光吸收光谱 (LAS) 得到迅速发展并广泛应用于燃烧诊断。作为一种用于测量多个燃烧参数的经济高效的工具，LAS 在准确度和灵敏度方面提供了独特的特性，可用于了解反应流中的反应和动力学。视线和断层扫描 LAS 技术已经激发了许多应用，并被证明分别适用于均匀和非均匀燃烧场中的原位燃烧诊断。这篇综述从为燃烧诊断开发的关键原理、传感器和仪器的角度突出了 LAS 技术发展的突破，特别强调一系列空间分辨 LAS 技术及其最近在获得高保真测量结果方面的应用，同时对实际燃烧室的干扰最小。在此过程中，我们注意到进一步发展基于 LAS 的燃烧诊断的一些挑战和要求。