摘要
分子吸收光谱数据,包括谱线的位置、强度、压力位移系数及展宽系数等,是研究温室效应、大气环境监测以及星际气体探测等应用的基本参考。随着激光技术的飞速发展,光腔衰荡光谱技术以其极高的探测灵敏度和测量精度,被广泛应用于分子光谱测量。结合各种复杂精密光谱线型,可以获得大量可靠的高精度光谱数据参数。这些结果被用于更新光谱数据库,甚至是检验基本物理定律和常数。主要介绍光腔衰荡光谱测量方法,特别是结合激光锁频技术的精密测量技术,并以一氧化碳、氢分子泛频振转光谱测量为例,介绍其在精密分子光谱参数测量中的应用。
Spectral parameters of molecular absorption lines,including positions,intensities,pressure-induced shift and broadening coefficients,are basic data for various applications,such as greenhouse effect and the atmospheric environment,and gas detection in the interstellar space.Along with the fast development of laser techniques,the cavity ring-down spectroscopy（CRDS）becomes a widely applied technique used for molecular spectroscopy,owing to its high sensitivity and high precision.Combined with the application of precise line profile models,CRDS has been used to retrieve numerous reliable and precise spectral data.These results have been integrated in spectral databases,and even used in testing fundamental physical laws and constants.Here a review of the CRDS method and its application in precision spectroscopy of molecules is given,in particular,using frequency-locked lasers.The studies of the high overtones of carbon monoxide and hydrogen are presented as examples of such applications.
作者
谈艳
王进
陶雷刚
孙羽
刘安雯
胡水明
Tan Yan1,2,3, Wang Jin1,2, Tao Leigang1,2, Sun Yu1,2, Liu Anwen1,2, Hu Shuiming1,2(1. Hef ei National Laboratory for Physical Scienee at the Microseale, Collaborative Innovation Center of （？hemistry jbr Energy Materials, University of Science and Technology of China, Hefei, Anhui 230026, China ; 2 Collaborative Innovation Center of Chemistry fbr Energy Materials, University of Science and Technology of China Hefei, Anhui 230026, China ;3 Harvard-Srnithsonian Center for Astrophysics, Atomic and Molecular Physics Division, Cambridge, MA 02138, USA)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2018年第9期24-36,共13页
Chinese Journal of Lasers
基金
国家自然科学基金(91436209,21473172,21688102)
中国科学院B类战略性先导科技专项(XDB21020100)
关键词
光谱学
分子光谱
红外光谱
精密测量
spectroscopy
molecular spectroscopy
infrared spectroscopy
precision measurement
