Optimization of resonator radial dimensions for quartz enhanced photoacoustic spectroscopy systems

被引：1
作者：
Firebaugh, Samara L. [1 ]
Terray, Eugene A. [2 ]
Dong, Lei [3 ]
机构：
[1] US Naval Acad, Annapolis, MD 21402 USA
[2] Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA
[3] Shanxi Univ, Taiyuan 030006, Shanxi, Peoples R China
来源：
LASER RESONATORS, MICRORESONATORS, AND BEAM CONTROL XV | 2013年 / 8600卷
基金：
美国国家科学基金会;
关键词：
Photoacoustic spectroscopy; acoustic modeling; microresonator; finite element modeling; TRACE GAS-ANALYSIS; TUNING FORKS; LASER; ATMOSPHERE;
D O I：
10.1117/12.2004581
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A finite element model for QEPAS systems has been developed that can apply to both on-axis and off-axis systems. The model includes the viscous and thermal loss on the acoustic resonator sidewalls, and these factors are found to significantly affect the signal to noise ratio. The model results are compared to experimental data and it is found that the model correctly predicts the optimal radial dimensions for resonator tubes of a given length. The model is applied to examine the dependence of signal-to-noise ratio on resonator diameter and sidewall thickness. The model is also applied to off-axis systems.
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页数：12
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