腔增强吸收光谱技术研究与应用进展(特邀)  

Research and Application Progress of Cavity-enhanced Absorption Spectroscopy(Invited)

作　　者：超星 胡臻 朱宁[1] CHAO Xing;HU Zhen;ZHU Ning(Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]清华大学能源与动力工程系,北京100084

出　　处：《光子学报》2023年第3期17-35,共19页Acta Photonica Sinica

基　　金：国家自然科学基金(Nos.51976105,91841302);“两机”基础研究重大专项(No.J2019-Ⅲ-0018-0062)。

摘　　要：腔增强吸收光谱技术(CEAS)具有测量精度高、响应时间快、空间占用少等优势,在痕量气体检测与精密光谱测量中发挥了重要作用。本文结合计算与实验结果,阐明了腔增强技术对信号增强的共性原理及实验测量吸收系数的方法,进而介绍了几种具有代表性的腔增强吸收光谱技术,包括:相干光CEAS技术、非相干光CEAS技术及光梳相干宽带CEAS技术等。以此为基础对腔增强吸收光谱技术在大气污染检测、生物医疗传感、化学反应动力学诊断等方面的应用进行综述。最后对腔增强吸收光谱技术的未来发展进行了展望。This paper provides a comprehensive review of the recent research development and applications of optical cavity enhanced absorption spectroscopy. It has been well understood in physics that the resonance phenomenon is one of the fundamental principles in various disciplines. It boasts of its powerful capability to filter, amplify, and select signals of specific frequencies. The optical cavity, with its periodic transmission characteristics of only certain frequencies of light, is essentially an optical resonance device.In this review, we provide a summary and logical insights into the recent development progress of Cavity Enhanced Absorption Spectroscopy(CEAS). While the term CEAS has been used to refer to all absorption spectroscopy techniques using an optical cavity in the broader sense, we limit ourselves in this paper to the specific category of techniques that use the transmitted light intensity through the cavity to infer properties of the media. The CEAS technology has the advantages of having a fast response time, high measurement accuracy and reduced space occupation. These allow it to play an important role in spectroscopy and trace gas detection in various applications. The theoretical derivation introduces the principle of signal enhancement by cavity enhancement technique and the diagnostic methods for media absorption. The difference between coherent and incoherent signal enhancement is analyzed to guide further discussion of the technical implementation. Based on this, the development of cavity enhanced absorption spectroscopy, including coherent off-axis CEAS, three-mirror structure CEAS, incoherent optical CEAS and optical comb CEAS, is introduced. This section is based upon the two main demands for species detection with spectroscopic techniques, namely, signal enhancement for trace gas detection and precise spectral measurement, and more spectral information over a broader spectral range for speciation and potentially multi-parameter diagnostics. Such demands have guided the relevant methodolo

关 键 词：光学谐振腔增强 腔增强吸收光谱技术 痕量气体检测 光谱测量 大气组分传感 生物医学传感 化学反应动力学组分诊断 

分 类 号：TN2[电子电信—物理电子学] K31[历史地理—历史学]