| Citation: | YUAN Kang-jie, ZHOU Yue-ting, GONG Ting, YAN Xiang, SUN Xiao-cong, QIU Xuan-bing, LI Chuan-liang. Multispectral line spectral analysis based on cavity ring-down spectroscopy[J]. Chinese Optics. doi: 10.37188/CO.2024-0207
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Laser absorption spectroscopy (LAS) has been widely applied in atmospheric monitoring, industrial production, medical diagnostics, and other fields due to its high sensitivity, rapid response, and real-time online detection capabilities. However, spectral overlap interference remains a major challenge in LAS. In this study, a multispectral line spectral analysis approach based on cavity ring-down spectroscopy (CRDS) is proposed. A CRDS gas detection system was developed using a custom-designed cage-type Fabry-Pérot cavity, and seven acetylene (C2H2) absorption lines in the range of
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