| A nonparametric point-by-point method to measure time-dependent frequency in wavelength modulation spectroscopy | |
Li RJ(李仁杰)1,2 ; Li, Jing3; Song ZY(宋子玉)1; He D(何东)1,4; Li F(李飞)1; Yu, Fei5; Lin X(林鑫)1
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| Corresponding Author | Li, Fei([email protected]) |
| Source Publication | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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| 2025-01-05 | |
| Volume | 324Pages:11 |
| ISSN | 1386-1425 |
| Abstract | 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. |
| Keyword | Tunable laser absorption spectroscopy Time-dependent frequency Nonparametric method Wavelength modulation spectroscopy Interferometric signal |
| DOI | 10.1016/j.saa.2024.124949 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001298071300001 |
| WOS Keyword | WAVE-FORMS ; LASER ; PARAMETERS ; SPECTRA |
| WOS Research Area | Spectroscopy |
| WOS Subject | Spectroscopy |
| Funding Project | 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] |
| Funding Organization | 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 |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Li, Fei |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/96479 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.China Acad Aerosp Aerodynam, Beijing 100074, Peoples R China; 4.Univ Sci & Technol China, Dept Modern Mech, Deep Space Explorat Lab, Hefei 230026, Peoples R China; 5.Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Mat High Power Laser, Shanghai 201800, Peoples R China |
| Recommended Citation GB/T 7714 | Li RJ,Li, Jing,Song ZY,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.Rp_Au:Li, Fei |
| APA | 李仁杰.,Li, Jing.,宋子玉.,何东.,李飞.,...&林鑫.(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 | 李仁杰,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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