红外与毫米波学报2010，Vol.29Issue(5)：321-324,341,5.
红外激光光声光谱气体传感谐振腔分析
RESONATE MODES IN PHOTOACOUSTIC CELL FOR GAS SENSING
摘要
Abstract
A cylinder shape photoacoustic (PA) cell has been designed and fabricated for mid infrared laser photoacoustic spectroscopy (MIR-PAS) gas sensing application. A complete modeling of the acoustic signal transmission and detection in the PA cell using FEM have been performed to simulate its characteristics and compared systemtically with the measured data. Results show that the second longitudinal mode of the PA cell has the highest resonance amplitude around 4.2 KHz with moderate Q value, so this mode is quite suitable for MIR PAS gas sensing purpose.关键词
光声光谱/气体传感/共振频率/有限元方法Key words
Photoacoustic spectroscopy/gas sensing/resonance frequency/finite element method分类
通用工业技术引用本文复制引用
张晓钧,张永刚..红外激光光声光谱气体传感谐振腔分析[J].红外与毫米波学报,2010,29(5):321-324,341,5.基金项目
NSFC(60876034) （60876034）
973(2006CB604) （2006CB604）
CAS Innovation(KGCX2-YW-121) （KGCX2-YW-121）
