Advances in cavity ring-down absorption spectroscopy research and typical applications [腔 衰 荡 吸 收 光 谱 技 术 的 研 究 进 展 及 典 型 应 用]

作者：Yuyang X.; Jin Y.; Zeqiang M.; Huimin J.; Jilong T.; Xiaohua W.; Jinduo W.; Zhipeng W.

来源：LASER & OPTOELECTRONICS PROGRESS, 2021, 58(19): 1900001.

DOI：10.3788/LOP202158.1900001

• Cavity ring-down absorption spectroscopy
• Excitation light source
• Modulation method
• Optical cavity structure
• Spectroscopy

Cavity ring-down absorption spectroscopy is a direct absorption spectroscopy detection technology with high sensitivity, strong selectivity, and fast response speed. This technology has the smallest noise absorption coefficient of 10-12 cm-1·Hz-1/2 due to continuous improvement and expansion of excitation light source, cavity structure, and modulation method etc. The working principle, technical characteristics, and typical applications of cavity ring-down absorption spectroscopy detection equipment are summarized in this study, and the effects of the excitation light source, cavity structure, and modulation methods on cavity ring-down spectroscopy detection technology are analyzed. Finally, the technology's application prospect is prospected by merging the typical applications of cavity ring-down absorption spectroscopy in different fields.

• 单位
  中国科学院大学