Author developed the one-dimensional mathematical model of photoacousticeffect with piezoelectric registration in thermal thick optical opaquesample with subsurface defect. The model is developed in view of theassumptions of ideally rigid connection piezosensor with sample and freefastening of sample in a microscope cell. This model allows to calculate aamplitude and phase of the photoacoustic signal, to restore the informationabout physical properties of object under the experimentally received image,to describe thermal and elastic properties of solids and subsurface defects,to investigate multy-layered and heterogeneous structures, subsurface ofsemiconductor materials, ceramics and metals.
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