Photoacoustic spectroscopy (PAS) can be utilized as an ultrasensitive gas detection method. The basic principles of gas detection using PAS are discussed in this paper. First, the basic instrumentation for a PAS gas detection system is introduced focusing on the photoacoustic cell. The discussion includes non-resonant photoacoustic cells and the different types of resonant photoacoustic cells, including the longitudinal photoacoustic cell, the Helmholtz photoacoustic cell, the T-type photoacoustic cell, and the high-frequency resonant photoacoustic cell. The basic working principles of each of these, cells as well as the advantages and disadvantages of photoacoustic cells are discussed, and the development of newer types of photoacoustic cells in recent years is outlined in detail. This review provides detailed reference information and guidance for interested researchers who would like to design and build advanced photoacoustic cells for gas detection.

中文翻译：

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光声光谱气体检测技术研究进展。

光声光谱（PAS）可用作超灵敏气体检测方法。本文讨论了使用 PAS 进行气体检测的基本原理。首先，介绍 PAS 气体检测系统的基本仪器，重点介绍光声池。讨论包括非谐振光声单元和不同类型的谐振光声单元，包括纵向光声单元、亥姆霍兹光声单元、T型光声单元和高频谐振光声单元。讨论了每种电池的基本工作原理以及光声电池的优缺点，并详细概述了近年来新型光声电池的发展。本综述为想要设计和构建用于气体检测的先进光声电池的感兴趣的研究人员提供了详细的参考信息和指导。