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Modulation Frequency Multiplexed Tunable Diode Laser Spectroscopy System for Simultaneous CO, CO2 Measurements
作者姓名:陈东  刘文清  张玉钧  刘建国  魏庆农  阚瑞峰  王敏  崔益本  陈玖英
作者单位:Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031
基金项目:Supported by the National Natural Science Foundation of China under Grant No 50534050, and the National High Technology Research and Development Programme of China under Grant No 2005AA641010.
摘    要:

关 键 词:调制频率  二极管激光光谱学系统  光学路径  激光技术
收稿时间:2006-02-14
修稿时间:2006-02-14

Modulation Frequency Multiplexed Tunable Diode Laser Spectroscopy System for Simultaneous CO, CO2 Measurements
CHEN Dong, LIU Wen-Qing, ZHANG Yu-Jun, LIU Jian-Guo,WEI Qing-Nong, KAN Rui-Feng, WANG Min, CUI Vi-Ben, CHEN Jiu-Ving.Modulation Frequency Multiplexed Tunable Diode Laser Spectroscopy System for Simultaneous CO, CO2 Measurements[J].Chinese Physics Letters,2006,23(9):2446-2449.
Authors:CHEN Dong  LIU Wen-Qing  ZHANG Yu-Jun  LIU Jian-Guo  WEI Qing-Nong  KAN Rui-Feng  WANG Min  CUI Vi-Ben  CHEN Jiu-Ving
Affiliation:Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031
Abstract:A modulation frequency multiplexed dual diode-laser system is developed for simultaneous detection of the two most common fire gas products CO and CO2. Simultaneous detection is achieved by modulating each laser at different frequencies, demodulating the signal by a pair of lock-in amplifiers for each gas. Laser beams are combined and detected by one detector after passing through an identical optical path. The experimental results show little performance degradation associated with modulation frequency multiplexing, and no cross-talk between the two multiplexed detection channels is measured.
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