Changchun Institute of Optics,Fine Mechanics and Physics,CAS
Multigas Sensing Technique Based on Quartz Crystal Tuning Fork-Enhanced Laser Spectroscopy | |
L. G. Xu,S. Zhou,N. W. Liu,M. H. Zhang,J. Q. Liang and J. S. Li | |
2020 | |
发表期刊 | Analytical Chemistry
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ISSN | 0003-2700 |
卷号 | 92期号:20页码:14153-14163 |
摘要 | A compact multigas sensor system based on a single quartz crystal tuning fork (QCTF) and multifrequency synchronous modulation strategy is proposed for trace gas detection. To demonstrate the novel detection technique, three near-infrared continuous-wave (CW) distributed feedback (DFB) diode lasers with center wavelengths of near 1391, 1574, and 1653 nm and a standard 32 kHz QCTF were integrated for simultaneous detection of H2O, CO2, and CH4, respectively. Wavelength modulation spectroscopy with second harmonic detection (WMS-2J) was selected for enhancing sensitivity. Design of the sensor configuration and primary performance between the traditional single-frequency modulation and the proposed tri-frequency modulation were experimentally investigated and compared in detail. The results indicate that the proposed sensing technique has significant advantages of cost effectiveness, portability, and ease-of-use, and detection limits of 1.4, 353, 3.1 ppm for simultaneously measuring H2O, CO2, and CH4, respectively, are obtained, corresponding to the normalized noise equivalent absorption (NNEA) coefficients of 2.65 x 10(-10), 8.09 x 10(-10), and 8.28 x 10(-10) cm(-1) W/root Hz, respectively. Moreover, the use of an erbium-doped fiber amplifier (EDFA) has been demonstrated as an effective method for sensitivity enhancement. |
DOI | 10.1021/acs.analchem.0c03233 |
URL | 查看原文 |
收录类别 | SCI ; EI |
语种 | 英语 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ciomp.ac.cn/handle/181722/64707 |
专题 | 中国科学院长春光学精密机械与物理研究所 |
推荐引用方式 GB/T 7714 | L. G. Xu,S. Zhou,N. W. Liu,M. H. Zhang,J. Q. Liang and J. S. Li. Multigas Sensing Technique Based on Quartz Crystal Tuning Fork-Enhanced Laser Spectroscopy[J]. Analytical Chemistry,2020,92(20):14153-14163. |
APA | L. G. Xu,S. Zhou,N. W. Liu,M. H. Zhang,J. Q. Liang and J. S. Li.(2020).Multigas Sensing Technique Based on Quartz Crystal Tuning Fork-Enhanced Laser Spectroscopy.Analytical Chemistry,92(20),14153-14163. |
MLA | L. G. Xu,S. Zhou,N. W. Liu,M. H. Zhang,J. Q. Liang and J. S. Li."Multigas Sensing Technique Based on Quartz Crystal Tuning Fork-Enhanced Laser Spectroscopy".Analytical Chemistry 92.20(2020):14153-14163. |
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