光谱学与光谱分析 |
|
|
|
|
|
Theoretical Study on Radial Resonance Coupling of Cylindrical Photoacoustic Cells |
YUAN Chang-ying1, LIU Xian-yong2, MENG Gui2, ZHAO Liang2 |
1. College of National Defense, Southwest University of Science and Technology, Mianyang 621000,China 2. School of Information Engineering, Southwest University of Science and Technology, Mianyang 621000,China |
|
|
Abstract Photoacoustic detection of trace concentrations of gases is one of the most sensitive techniques of infrared absorption spectroscopy. High-sensitivity photoacoustic detectors apply an acoustic resonator for the amplification of the weak photoacoustic signal. If the modulation frequency coincides with one of the resonance frequencies of the chamber, a standing acoustic wave is excited and the system works as an acoustic amplifier. The amplification of the resonator relies on the acting mode, quality factor, nature of microphone, and the coupling between electromagnetic radiation and the stand wave resonance mode. With different incidence orientation of the modulated IR laser relative to acoustic chamber, the sound pressure magnitude of resonance mode varies. The influence of different laser incidence orientation on the coupling coefficients of radial resonance mode of cylindrical photoacoustic cells was investigated by both theoretical deduction and numerical computation method. It is concluded that the coupling coefficients have two zeros and two maximums when the laser incidence angle varies from 0 to π/2. When the incidence angle is 0 or tan-1(0.859 2×2R/L), the coupling coefficients are zeros and the radial resonance is invalid. When the incidence angle is tan-1(0.556 8×2R/L) or tan-1(2R/L), the coupling coefficients are the maximums and the radial resonance is the strongest. Here R is the radius and L the length of the cell. The results therein before give some theoretical guidelines for photoacoustic cell designing, optimizing, installing and adjusting, and for improvement of detection sensitivity in trace gas detectors through maximal excitement of radial modes in cylindrical acoustic cells.
|
Received: 2009-07-08
Accepted: 2009-10-16
|
|
Corresponding Authors:
YUAN Chang-ying
E-mail: yuanchangying@yahoo.com.cn
|
|
[1] Pao Y H. Optoacoustic Spectroscopy and Detection. New York:Academic, 1977. [2] YANG Yue-tao, CHEN Wan-song, LI Jun-jia, et al(杨跃涛,陈万松,李俊嘉,等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2008, 28(9): 2024. [3] Dewey C F, Kamm R D, Hackett C E. Appl. Phys. Lett.,1973, 23: 633. [4] Christian B, Andreas W, Peter H, et al. Appl. Opt., 1995, 34(18): 3257. [5] Kapitanov V A, Zeninari V, Parvitte B, et al. Spectrochimica Acta,2002, 58(2): 2397. [6] Kastle R,Sigrist M W. Appl. Phys. B: Laser Opt., 1996, 63: 389. [7] McClenny W A, Bennett C A, Russwurm G M, et al. Appl. Opt., 1981, 20(4): 650. [8] Andras M, Peter H, Zoltan B. Rev. Sci. Instr. 2001, 72(4): 1937. [9] Karbach A,Hess P. J. Appl. Phys., 1985, 58(10): 3851. [10] SHI Qiang, HU Shui-ming, CHEN Jun, et al(史 强,胡水明,陈 军,等). Chinese Journal of Chemical Physics(化学物理学报), 1998, 11(1): 20. [11] Thomas S. Anal. Bioanal. Chem., 2006, 384: 1071. [12] Stéphane S, Luc T, Marc N, et al. Spectrochimica Acta, 2004, 60(4): 3259. [13] Gondal M A, Dastageer A, Shwehdi M H. Talanta,2004, 62(1): 131. [14] Rosencwaig A. Photoacoustics and Photoacoustic Spectroscopy, Chemical Analysis 57. New York: Wiley, 1980. [15] Dumitras D C, Dutu D C, Matei C, et al. Journal of Optoelectronics and Advanced Materials,2007, 9(12): 3655.
|
[1] |
ZHENG Hong-quan, DAI Jing-min*. Research Development of the Application of Photoacoustic Spectroscopy in Measurement of Trace Gas Concentration[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(01): 1-14. |
[2] |
CHENG Gang1, CAO Ya-nan1, TIAN Xing1, CAO Yuan2, LIU Kun2. Simulation of Airflow Performance and Parameter Optimization of
Photoacoustic Cell Based on Orthogonal Test[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(12): 3899-3905. |
[3] |
CHEN Tu-nan1, 2, LI Kang1, QIU Zong-jia1, HAN Dong1, 2, ZHANG Guo-qiang1, 2*. Simulation Analysis and Experiment Verification of Insulating Material-Based Photoacoustic Cell[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(09): 2922-2927. |
[4] |
JIN Hua-wei1, 2, 3, WANG Hao-wei1, 2, LUO Ping1, 2, FANG Lei1, 2. Simulation Design and Performance Analysis of Two-Stage Buffer
Photoacoustic Cell[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(08): 2375-2380. |
[5] |
LI Zhen-gang1, 2, SI Gan-shang1, 2, NING Zhi-qiang1, 2, LIU Jia-xiang1, FANG Yong-hua1, 2*, CHENG Zhen1, 2, SI Bei-bei1, 2, YANG Chang-ping1, 2. Research on Long Optical Path and Resonant Carbon Dioxide Gas
Photoacoustic Sensor[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(01): 43-49. |
[6] |
CHENG Gang1, CAO Ya-nan1, TIAN Xing1, CAO Yuan2, LIU Kun2*. Influence of Photoacoustic Cell Geometrical Shape on the Performance of Photoacoustic Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(08): 2345-2351. |
[7] |
WANG Qiao-yun, YIN Xiang-yu, YANG Lei, XING Ling-yu. Geometrical Optimization of Resonant Ellipsoidal Photoacoustic Cell in Photoacoustic Spectroscopy System[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(05): 1351-1355. |
[8] |
LIU Li-xian1, 2, 3, HUAN Hui-ting1, 2, Mandelis Andreas2, SHAO Xiao-peng1*. Multiple Dissolved Gas Analysis in Transformer Oil Based on Fourier Transform Infrared Photoacoustic Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(03): 684-687. |
[9] |
NIU Ming-sheng1, 2, LIU Qiang1, 2, WANG Gui-shi1,2, YUAN Yi-qian2, HUANG Wei1, ZHANG Wei-jun1, GAO Xiao-ming1, 2*. Low Temprature Properties of T Shape Photoacoustic Cell and Applications[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(03): 577-581. |
[10] |
PENG Yong1, 2, YU Qing-xu1 . Tunable Fiber Laser Based Photoacoustic Spectroscopy for Acetylene Detection[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(08): 2030-2033. |
|
|
|
|