| 基于可调谐二极管激光吸收光谱遥测CH4浓度 |
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| 引用本文： | 汪世美,刘文清,刘建国,涂兴华,杨立书. 基于可调谐二极管激光吸收光谱遥测CH4浓度[J]. 光谱学与光谱分析, 2006, 26(2): 221-224 |
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| 作者姓名： | 汪世美 刘文清 刘建国 涂兴华 杨立书 |
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| 作者单位： | 中国科学院安徽光学精密机械研究所,安徽,合肥,230031;中国科学院安徽光学精密机械研究所,安徽,合肥,230031;中国科学院安徽光学精密机械研究所,安徽,合肥,230031;中国科学院安徽光学精密机械研究所,安徽,合肥,230031;中国科学院安徽光学精密机械研究所,安徽,合肥,230031 |
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| 摘 要： | 文章对可调谐二极管激光的直接吸收和波长调制光谱进行了理论分析,设计了一套用于研究甲烷吸收特性的测量系统.近红外二极管激光工作在室温下,选用波长为1.65 μm,利用甲烷的2v3带R(3)线实现对甲烷气体的吸收测量,对测量的信噪比和系统的基本噪声源进行了分析,为实现甲烷浓度的在线遥测打下基础.
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| 关 键 词： | 二极管激光 波长调制光谱 遥测 甲烷 |
| 文章编号： | 1000-0593（2006）02-0221-04 |
| 收稿时间： | 2004-12-08 |
| 修稿时间： | 2005-03-28 |
The Study of Remote Sensing CH4 Concentration Based on Tunable Diode Laser Absorption Spectroscopy |
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| WANG Shi-mei,LIU Wen-qing,LIU Jian-guo,TU Xing-hua,YANG Li-shu. The Study of Remote Sensing CH4 Concentration Based on Tunable Diode Laser Absorption Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2006, 26(2): 221-224 |
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| Authors: | WANG Shi-mei LIU Wen-qing LIU Jian-guo TU Xing-hua YANG Li-shu |
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| Affiliation: | Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China |
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| Abstract: | In the present paper, a review and analysis of the theory of direct absorption spectroscopy and modulation spectroscopy using tunable diode laser were provided, and a remote sensing system of CH4 was designed. A near infrared tunable diode laser operating at wavelength 1.65 microm at room temperature was used to perform the measurement of CH4, using the R(6) line of, the 2upsilon3 band of methane. Signal to noise ratio and fundamental noise sources were also discussed. This work has laid the foundation for remote sensing of CH4 on-line. |
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| Keywords: | Diode laser Wavelength modulation spectroscopy Remote sensing Methane |
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