合成孔径数字全息的记录、再现及实现

介绍了合成孔径数字全息记录和再现的基本原理，提出了相应的实现方法和技术方案。特别对合成孔径数字全息再现中的两类方法：用单参考光记录的子全息图数字再现光场复振幅叠加或强度叠加，以及用多参考光记录的子全息图数字再现光场复振幅叠加或强度叠加方法进行了详细理论分析和实验研究。结果表明，合成孔径技术是一种提高数字全息再现像的分辨率的有效方法。与传统的子全息图直接拼接的合成孔径数字全息再现方法相比，用子数字全息图再现光场复振幅叠加或强度叠加两种再现方法均可实现合成孔径数字全息的再现，并可显著提高再现像的分辨率，但强度叠加方法的记录和再现难度远小于前者。在实际中可以根据解决问题的要求和子数字全息图的记录情况选用。

Recording and Reconstruction of Synthetic Aperture Digital Holography

This paper introduces the fundamental principle of the recording and numerical reconstruction of the synthetic aperture digital holography, and proposes two numerical reconstructed methods: one is the numerical reconstructed complex amplitude superposition or intensity superposition from the single reference beam sub hologram, the other one is the numerical reconstructed complex amplitude superposition or intensity superposition of the multi reference beams sub hologram. The experimental research results show: Synthetic aperture technique can improve the resolution of digital holography evidently. Comparing with the conventional numerical reconstructed method of direct combined sub hologram, the proposed two kinds of numerical reconstructed methods are the same in improving the resolution of reconstructing image of digital holography, but the difficulty of recording and reconstruction of synthetic aperture digital holography by the intensity superposition method is decreased.