Piezoelectric photoacoustic detection: Theory and experiment
- 1 June 1980
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 51 (6) , 3343-3353
- https://doi.org/10.1063/1.328045
Abstract
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.This publication has 22 references indexed in Scilit:
- Optoacoustic Raman gain spectroscopy of liquidsApplied Physics Letters, 1979
- The dependence of an acoustically nonresonant optoacoustic signal on pressure and buffer gasesApplied Physics Letters, 1979
- The role of buffer gases in optoacoustic spectroscopyApplied Physics Letters, 1978
- Sensitive optoacoustic detection of carbon monoxide by resonance absorptionApplied Physics Letters, 1978
- Experimental investigation of the photoacoustic effect in liquids and solidsThe Journal of the Acoustical Society of America, 1976
- Detection of weakly absorbing gases using a resonant optoacoustic methodJournal of Applied Physics, 1976
- Signal saturation effects in photoacoustic spectroscopy with applicability to solid and liquid samplesApplied Physics Letters, 1976
- Theory of the photoacoustic effect with solidsJournal of Applied Physics, 1976
- Collisional deactivation of vibrationally excited singlet molecular oxygenThe Journal of Chemical Physics, 1973
- Ultralow Gas Concentration Infrared Absorption SpectroscopyJournal of Applied Physics, 1971