Baseline-free direct absorption spectroscopy and its application in line intensity measurement of ammonia

doi:10.1016/j.optcom.2022.128848

	Baseline-free direct absorption spectroscopy and its application in line intensity measurement of ammonia
	Long, Jiangxiong 1,2; Zhang, Yujun 3; Shao, Li 1; You, Kun 3; He, Ying 3; Ye, Qing 1,2; Sun, Xiaoquan 1,2
刊名	OPTICS COMMUNICATIONS
	2022-12-15
卷号	525
关键词	Direct absorption spectroscopy Baseline-free Line intensity Ammonia
ISSN号	0030-4018
DOI	10.1016/j.optcom.2022.128848
通讯作者	Zhang, Yujun(yjzhang@aiofm.ac.cn) ; Shao, Li(shaoli-eei@163.com)
英文摘要	A method based on direct absorption spectroscopy (DAS) without baseline fitting procedure, which we called baseline-free DAS (BFDAS), is proposed. The BFDAS utilizes three transmission spectra at different pressures and a simulated absorbance at the smallest pressure to derive the difference of integral absorbances at the other two pressures, where gas concentration or line intensity can be obtained. The proposed method is experimentally validated by comparing the line intensities of ammonia measured by conventional DAS and BFDAS, which demonstrates good performance of the BFDAS in broadened or narrowly scanned spectra where baseline fitting is difficult to be implemented.
资助项目	Key Program of the National Natural Science Foundation of China[62033012]
WOS关键词	BROADENING COEFFICIENTS ; HIGH-ACCURACY ; ALGORITHM
WOS研究方向	Optics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000890482000015
资助机构	Key Program of the National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/131618]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhang, Yujun; Shao, Li
作者单位	1.Natl Univ Def Technol, State Key Lab Pulsed Power Laser Technol, Hefei 230037, Peoples R China 2.Adv Laser Technol Lab Anhui Prov, Hefei 230037, Peoples R China 3.Chinese Acad Sci, Hefei Inst Phys Sci, Natl Engn Res Ctr Air Pollut & Greenhouse Gas Mon, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Long, Jiangxiong,Zhang, Yujun,Shao, Li,et al. Baseline-free direct absorption spectroscopy and its application in line intensity measurement of ammonia[J]. OPTICS COMMUNICATIONS,2022,525.
APA	Long, Jiangxiong.,Zhang, Yujun.,Shao, Li.,You, Kun.,He, Ying.,...&Sun, Xiaoquan.(2022).Baseline-free direct absorption spectroscopy and its application in line intensity measurement of ammonia.OPTICS COMMUNICATIONS,525.
MLA	Long, Jiangxiong,et al."Baseline-free direct absorption spectroscopy and its application in line intensity measurement of ammonia".OPTICS COMMUNICATIONS 525(2022).