Piezoelectric photoacoustic detection: Theory and experiment
Piezoelectric photoacoustic detection: Theory and experiment
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DOI：
10.1063/1.328045
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发表时间：
1980-06
影响因子：
3.2
通讯作者：
W. Jackson;N. Amer
中科院分区：
文献类型：
--
作者：
W. Jackson;N. Amer
发展了凝聚态样品的压电光声光谱理论。将试样视为弹性层，忽略换能器对试样的影响，采用应力格林函数求解三维不耦合准静态热弹性方程。导出了信号对样品的吸收、调制频率、热性能和机械性能的依赖表达式。实验验证了理论预测，分析了噪声源，估计了噪声等效功率。最后，讨论了探测器优化的注意事项。
The theory of piezoelectric photoacoustic spectroscopy is developed for condensed‐matter samples. Treating the sample as an elastic layer and neglecting the transducer’s effect on the sample, the three‐dimensional uncoupled quasistatic thermoelastic equations are solved using a Green’s function for the stress. An expression for the dependence of the signal on absorption, modulation frequency, thermal properties, and mechanical properties of the sample is derived. The theoretical predictions are experimentally verified, the sources of noise are analyzed, and the noise equivalent power is estimated. Finally, considerations for detector optimization are discussed.