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A nonparametric point-by-point method to measure time-dependent frequency in wavelength modulation spectroscopy

文献类型：期刊论文

作者Li, Renjie4,5; Li, Jing3; Song, Ziyu5; He, Dong2,5; Li, Fei5; Yu, Fei1; Lin, Xin5; Li F(李飞); Lin X(林鑫); He D(何东)
刊名SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
出版日期2025-01-05
卷号324页码:11
关键词Tunable laser absorption spectroscopy Time-dependent frequency Nonparametric method Wavelength modulation spectroscopy Interferometric signal
ISSN号1386-1425
DOI10.1016/j.saa.2024.124949
通讯作者Li, Fei(lifei@imech.ac.cn)
英文摘要A nonparametric point-by-point (NPP) method is presented for high-accuracy measurement of the timedependent frequency (laser frequency) in tunable laser absorption spectroscopy, crucial for ensuring ultimate measurement accuracy. In wavelength modulation spectroscopy in particular, the parametric methods in current use for time-dependent frequency measurement are insufficiently accurate and are difficult to apply to complex modulation scenarios. Based on a multi-scale viewpoint, point-by-point measurement of the frequency is realized by linear superposition of the frequency information mapped from the interferometric signal on a unit scale and on a local scale. Validation experiments indicate that the measurement accuracy of the proposed NPP method is three times that of the existing parametric methods, while effectively immunizing against non-ideal tuning effects. Additionally, the NPP method is suitable for use with arbitrarily complex modulations such as square wave modulation, for which parametric methods are inapplicable.
WOS关键词WAVE-FORMS ; LASER ; PARAMETERS ; SPECTRA
资助项目National Natural Science Foundation of China[12072355] ; National Natural Science Foundation of China[92271117] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0620202] ; Key-Area Research and Development Program of Guangdong Province[2021B0909060004]
WOS研究方向Spectroscopy
语种英语
WOS记录号WOS:001298071300001
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Key-Area Research and Development Program of Guangdong Province
源URL[http://dspace.imech.ac.cn/handle/311007/96478]  
专题力学研究所_高温气体动力学国家重点实验室
通讯作者Li, Fei
作者单位1.Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Mat High Power Laser, Shanghai 201800, Peoples R China
2.Univ Sci & Technol China, Dept Modern Mech, Deep Space Explorat Lab, Hefei 230026, Peoples R China
3.China Acad Aerosp Aerodynam, Beijing 100074, Peoples R China
4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Li, Renjie,Li, Jing,Song, Ziyu,et al. A nonparametric point-by-point method to measure time-dependent frequency in wavelength modulation spectroscopy[J]. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2025,324:11.
APA Li, Renjie.,Li, Jing.,Song, Ziyu.,He, Dong.,Li, Fei.,...&李仁杰.(2025).A nonparametric point-by-point method to measure time-dependent frequency in wavelength modulation spectroscopy.SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,324,11.
MLA Li, Renjie,et al."A nonparametric point-by-point method to measure time-dependent frequency in wavelength modulation spectroscopy".SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 324(2025):11.

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来源：力学研究所

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