摘要
中红外基频指纹吸收谱具有吸收强、谱线宽且密集的特点。通常吸收红外光谱的气体分子在3000cm^(-1)附近的中红外基频吸收强度比近红外吸收高约2个数量级,因此逐渐成为腔衰荡光谱(CRDS)技术的研究热点。简述了CRDS技术的工作原理及技术优势,介绍了中波红外CRDS技术特点并分析对比了近红外与中红外波段的CRDS技术差异,论述了基于中红外波段的CRDS技术研究现状,最后基于应用研究进展对其前景进行了展望。
The fingerprint absorption spectrum of mid infrared fundamental frequency is characterized by strong absorption,broad and dense spectral lines.In general,as molecules absorbing infrared spectra have mid infrared base frequency absorption intensity near 3000cm^(-1) that is about two orders of magnitude higher than that of the near infrared absorption,and thus it has gradually become a research hotspot for cavity ring down spectroscopy(CRDS)technology.In this paper,the working principle and technical advantages of CRDS technology are briefly described,and the characteristics of mid infrared CRDS technology are introduced.Moreover,the differences between near infrared and mid infrared CRDS technology are analyzed and compared.The research status of CRDS technology based on mid infrared band is discussed finally.
作者
孙乐
貊泽强
胡誉元
唐吉龙
魏志鹏
SUN Le;MO Ze-qiang;HU Yu-yuan;TANG Ji-long;WEI Zhi-peng(State Key Laboratory of High Power Semiconductor Laser of Changchun University of Science and Technology,Changchun 130022,China;Zhongshan Institute of Changchun University of Science and Technology,Zhongshan 528437,China;Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094,China;Key Laboratory of Computational Optical Imaging Technology,Chinese Academy of Sciences,Beijing 100094,China)
出处
《激光与红外》
CAS
CSCD
北大核心
2024年第3期323-335,共13页
Laser & Infrared
基金
国家自然科学基金项目(No.12074045
No.62027820)
中国科学院空天信息创新研究院重点布置项目(No.E1Z204020F)
吉林省科技厅自然科学基金项目(No.20210101408JC,No.20230101352JC)资助。
关键词
光谱学
中红外
腔衰荡光谱技术
气体检测
spectroscopy
mid infrared
cavity ring down spectroscopy
gas detection
