Abstract

A method and physical and technical design of the laser heterodyne tomography of scattering properties of thick photosensitive materials (media) in the reflection mode are proposed. The method is based on the acoustooptic scanning of a test reflection grating recorded in the medium and on the layer-by-layer collinear heterodyne analysis of the scattered field. The formulas for estimating the spatial resolution capability of the method and the period of test grating are obtained, and the estimate of method’s sensitivity is given in the form of dependence of the heterodyne signal on the depth of grating layer positions. The theoretical conclusions of the work are confirmed experimentally.

中文翻译：

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反射光栅的激光外差层析成像方法

摘要

提出了激光外差层析成像技术对厚感光材料（介质）在反射模式下的散射特性的方法和物理技术设计。该方法基于介质中记录的测试反射光栅的声光扫描以及散射场的逐层共线外差分析。得到了估计该方法的空间分辨率能力和测试光栅周期的公式，并以外差信号对光栅层位置深度的依赖性形式给出了方法灵敏度的估计。实验的理论结论得到了证实。