Techniques to enhance the photoacoustic signal for trace gas sensing: A review

doi:10.1016/j.sna.2022.113807

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	Techniques to enhance the photoacoustic signal for trace gas sensing: A review
	F. P. Wang; Y. P. Cheng; Q. S. Xue; Q. Wang; R. Liang; J. H. Wu; J. C. Sun; C. G. Zhu and Q. Li
刊名	Sensors and Actuators a-Physical
	2022
卷号	345 页码:21
ISSN号	0924-4247
DOI	10.1016/j.sna.2022.113807
英文摘要	Photoacoustic spectroscopy (PAS), which relies on the detection of absorption-induced acoustic waves, is widely used for gas sensing. This paper summarizes and discusses most of the recent techniques for photoacoustic enhancement throughout the overall process from laser-molecule interaction to acoustic wave detection. Considering the theoretical principle and system composition of PAS gas sensor, we classify photoacoustic enhancing techniques into three aspects. The first one is to enhance the photoacoustic excitation by building up the laser power in terms of the positive proportional relation between the optical power and photoacoustic signal. The second one is to amplify the acoustic strength with various kinds of resonators after the photoacoustic generation. The third approach to further improve the photoacoustic detection is to develop more efficient acoustic transducers, for example, custom tuning fork, cantilever and fiber-optic microphone. Finally, the ad-vantages and limitations of these different techniques are analyzed.
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/67153]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	F. P. Wang,Y. P. Cheng,Q. S. Xue,et al. Techniques to enhance the photoacoustic signal for trace gas sensing: A review[J]. Sensors and Actuators a-Physical,2022,345:21.
APA	F. P. Wang.,Y. P. Cheng.,Q. S. Xue.,Q. Wang.,R. Liang.,...&C. G. Zhu and Q. Li.(2022).Techniques to enhance the photoacoustic signal for trace gas sensing: A review.Sensors and Actuators a-Physical,345,21.
MLA	F. P. Wang,et al."Techniques to enhance the photoacoustic signal for trace gas sensing: A review".Sensors and Actuators a-Physical 345(2022):21.