Optimization design of sphere-tube-coupled photoacoustic cell and application of nitrogen dioxide detection

doi:10.1002/mop.33321

	Optimization design of sphere-tube-coupled photoacoustic cell and application of nitrogen dioxide detection
	Li, Zhengang 1,2; Liu, Jiaxiang 2; Si, Ganshang 1,2; Ning, Zhiqiang 1,2; Fang, Yonghua 1,2; Pan, Ying 2
刊名	MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
	2022-06-01
关键词	finite element simulation minimum detection limit photoacoustic spectroscopy response capacity sphere-tube-coupled photoacoustic cell
ISSN号	0895-2477
DOI	10.1002/mop.33321
通讯作者	Fang, Yonghua(yhfang@aiofm.ac.cn)
英文摘要	Based on photoacoustic spectroscopy, a high-sensitivity sphere-tube-coupled photoacoustic cell suitable for gas detection in the ultraviolet to the near-infrared band (UV-NIR) was developed. A diffuse reflection sphere with the inner wall coated with polytetrafluoroethylene (PTFE) was invoked as a long optical path cell, and the light beam was reflected multiple times on the inner wall of the sphere to increase the absorption path of the gas. An aluminum tube was used as a resonance cavity, which worked in the first-order longitudinal resonance mode to amplify the photoacoustic signal. To improve the performance of the photoacoustic cell and the detection ability of the gas to be measured, the geometric parameters of the photoacoustic cell were optimized through finite element simulation, which not only reduced the volume of the photoacoustic cell but also increased the sound pressure and quality factor. To compare the detection performance of the photoacoustic cell before and after optimization, relevant experiments were carried out with nitrogen dioxide (NO2) as an example. The results showed that the response capacity of the photoacoustic cell for NO2 increased from 0.52546 to 0.61294 mV/ppm. The minimum detection limit was reduced from 270 to 68 ppt, and the average time of Allan deviation was 100 s. Additionally, due to the wide band high reflectance of PTFE, the gases with absorption peaks in UV-NIR could realize high-sensitivity detection based on the long optical path and acoustic resonance.
资助项目	National Natural Science Foundation of China[61875207] ; Scientific Instrument Developing Project of the Chinese Academy of Sciences[YJKYYQ20190050] ; Anhui Science Foundation for Distinguished Youth Scholars[1908085J23]
WOS关键词	SPECTROSCOPY ; NO2
WOS研究方向	Engineering ; Optics
语种	英语
出版者	WILEY
WOS记录号	WOS:000803870800001
资助机构	National Natural Science Foundation of China ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Anhui Science Foundation for Distinguished Youth Scholars
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/130985]
专题	中国科学院合肥物质科学研究院
通讯作者	Fang, Yonghua
作者单位	1.Univ Sci & Technol China, Hefei, Peoples R China 2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Li, Zhengang,Liu, Jiaxiang,Si, Ganshang,et al. Optimization design of sphere-tube-coupled photoacoustic cell and application of nitrogen dioxide detection[J]. MICROWAVE AND OPTICAL TECHNOLOGY LETTERS,2022.
APA	Li, Zhengang,Liu, Jiaxiang,Si, Ganshang,Ning, Zhiqiang,Fang, Yonghua,&Pan, Ying.(2022).Optimization design of sphere-tube-coupled photoacoustic cell and application of nitrogen dioxide detection.MICROWAVE AND OPTICAL TECHNOLOGY LETTERS.
MLA	Li, Zhengang,et al."Optimization design of sphere-tube-coupled photoacoustic cell and application of nitrogen dioxide detection".MICROWAVE AND OPTICAL TECHNOLOGY LETTERS (2022).