Multiple-sound-source-excitation quartz-enhanced photoacoustic spectroscopy based on a single-line spot pattern multi-pass cell

被引：25
作者：
Cui, Ruyue [1 ,2 ,3 ]
Wu, Hongpeng [1 ,2 ]
Dong, Lei [1 ,2 ]
Chen, Weidong [3 ]
Tittel, Frank K. [4 ]
机构：
[1] Shanxi Univ, Inst Laser Spect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China
[2] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China
[3] Univ Littoral Cote dOpale, Lab Phys Chim Atmosphere, F-59140 Dunkerque, France
[4] Rice Univ, Dept Elect & Comp Engn, 6100 Main St, Houston, TX 77005 USA
来源：
APPLIED PHYSICS LETTERS | 2021年 / 118卷 / 16期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
The project is sponsored by National Key R&D Program of China (No. 2019YFE0118200); National Natural Science Foundation of China (NSFC) (Nos. 62075119 and 61805132); Sanjin Scholar (No. 2017QNSJXZ-04); and Shanxi 1331KSC. Frank K. Tittel acknowledges the support by the Robert Welch Foundation (Grant No. C0586);
D O I：
10.1063/5.0047963
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Multiple-sound-source-excitation quartz-enhanced photoacoustic spectroscopy (MSSE-QEPAS) based on a single-line spot pattern multi-pass cell (MPC) is reported for trace gas detection. The single-line spot pattern MPC is designed to make a laser beam pass through a quartz tuning fork (QTF) 60 times, thus producing 60 sound sources between the two QTF prongs. These sound sources excite the QTF operating at fundamental resonance mode in phase, resulting in a signal gain factor of similar to 20. A theoretical mode based on convolution method is proposed to explain the working mechanism of MSSE-QEPAS.
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页数：4
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