title: [Second-harmonic detection with tunable diode laser absorption spectroscopy of CO and CO2 at 1.58 microm].
abstract: Tunable diode laser absorption spectroscopy has been applied in the fields of atmospheric chemistry and monitoring pollutant gases as a new method of measuring trace gases. The technique of remote sensing of CO and CO2 at 760 mm Hg pressure with tunable diode laser absorption spectroscopy in the near-infrared region is introduced. And the relationship between the second-harmonic spectrum of CO2 in Lorentzian line shape and the modulation amplitude is also presented.
authors.affiliation: Key Laboratory of Environmental Optics and Technology, Chinese Academy of Sciences, Anhui Institute of Optics and Fine Mechanics, Hefei 230031, China.
authors.forename: Xing-Hua
authors.initials: XH
authors.lastname: Tu
authors.forename: Wen-Qing
authors.initials: WQ
authors.lastname: Liu
authors.forename: Yu-Jun
authors.initials: YJ
authors.lastname: Zhang
authors.forename: Feng-Zhong
authors.initials: FZ
authors.lastname: Dong
authors.forename: Min
authors.initials: M
authors.lastname: Wang
authors.forename: Tie-Dong
authors.initials: TD
authors.lastname: Wang
authors.forename: Xiao-Mei
authors.initials: XM
authors.lastname: Wang
authors.forename: Jian-Guo
authors.initials: JG
authors.lastname: Liu