A well-isolated vibrational state of CO verified by near-infrared saturated spectroscopy with kHz accuracy.

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ID: 85851
2020
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Abstract
Quantitative determination of atmospheric CO2 concentration by remote sensing relies on accurate line parameters. Lamb dips of the lines up to J'' = 72 in the 30013-00001 band at 1605 nm were measured using a comb-locked cavity ring-down spectrometer, and the positions were determined with an accuracy of a few kHz. A simple effective Hamiltonian model can fit the rotational energies in the 30013 state ideally within the experimental accuracy, indicating that the vibrational state is well-isolated and can be regarded as free from perturbations. From a comparison between other bands using a similar analysis, we conclude that the transitions in the 30013-00001 band could be more suitable as reference lines for sensing applications with the potentially improved line parameter accuracy.
Reference Key
wu2020aphysical Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Wu, Hao;Hu, Chang-Le;Wang, Jin;Sun, Yu R;Tan, Yan;Liu, An-Wen;Hu, Shui-Ming;
Journal Physical chemistry chemical physics : PCCP
Year 2020
DOI
10.1039/c9cp05121j
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Keywords
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