Leilei Zhang, Jiaxiang Liu, Zhizhen Zhu, Yonghua Fang, Yue Wu, Wenkang Yang, Mengqi Tao, Zhiqiang Ning. Detection of Trace Sulfur Dioxide Gas Using Quartz-Enhanced Photoacoustic Spectroscopy[J]. Laser & Optoelectronics Progress, 2019, 56(21): 213001
- Laser & Optoelectronics Progress
- Vol. 56, Issue 21, 213001 (2019)
Fig. 1. Coefficients of 1st-4th order harmonic components of Lorentz absorption line
Fig. 2. Physical diagram of quartz tuning fork
Fig. 3. Three-dimensional model of quartz tuning fork.(a) Size parameters of quartz tuning fork; (b) three-dimensional modeling of quartz tuning fork
Fig. 4. Vibration shapes of first six order models of the quartz tuning fork. (a) 1st order; (b) 2nd order; (c) 3rd order; (d) 4th order; (e) 5th order; (f) 6th order
Fig. 5. Comparison of absorption line intensities of hydrogen sulfide, water, and carbon dioxide
Fig. 6. Simulated absorption spectrum of hydrogen sulfide gas with volume fraction of 20×10-6
Fig. 7. Schematic of resonant frequency scanning for quartz tuning fork
Fig. 8. Structural diagram of hydrogen sulfide gas measurement system based on QEPAS
Fig. 9. Photoacoustic signals under different concentrations of hydrogen sulfide gas
Fig. 10. Second harmonic signal of hydrogen sulfide with volume fraction of 100×10-6
|
Table 1. Size parameters of quartz tuning fork
|
Table 2. Simulated results of the first six modes of quartz tuning forkHz
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20