Line intensities of CO near 1560 nm measured with absorption and dispersion spectroscopy
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arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866912021814968320 |
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| author | Huang, Q. Tan, Y. Yin, R. -H. Nie, Z. -L. Wang, J. Hu, S. -M |
| author_facet | Huang, Q. Tan, Y. Yin, R. -H. Nie, Z. -L. Wang, J. Hu, S. -M |
| contents | High-precision line intensities are of great value in various applications, such as greenhouse gas metrology, planetary atmospheric analysis, and trace gas detection. Here we report simultaneous measurements of cavity-enhanced absorption and dispersion spectroscopy of the prototype molecule $^{12}$C$^{16}$O using the same optical resonant cavity. Nine lines were measured in the R branch of the $v=3-0$ band. The absorption and dispersion spectra were fitted separately with speed-dependent Voigt profiles, and the line intensities obtained by the two methods agree within the experimental uncertainty of about 1\textperthousand. The results demonstrate the feasibility of SI-traceable molecular density measurements based on laser spectroscopy. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_08267 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Line intensities of CO near 1560 nm measured with absorption and dispersion spectroscopy Huang, Q. Tan, Y. Yin, R. -H. Nie, Z. -L. Wang, J. Hu, S. -M Chemical Physics High-precision line intensities are of great value in various applications, such as greenhouse gas metrology, planetary atmospheric analysis, and trace gas detection. Here we report simultaneous measurements of cavity-enhanced absorption and dispersion spectroscopy of the prototype molecule $^{12}$C$^{16}$O using the same optical resonant cavity. Nine lines were measured in the R branch of the $v=3-0$ band. The absorption and dispersion spectra were fitted separately with speed-dependent Voigt profiles, and the line intensities obtained by the two methods agree within the experimental uncertainty of about 1\textperthousand. The results demonstrate the feasibility of SI-traceable molecular density measurements based on laser spectroscopy. |
| title | Line intensities of CO near 1560 nm measured with absorption and dispersion spectroscopy |
| topic | Chemical Physics |
| url | https://arxiv.org/abs/2405.08267 |