Optical Scanning Holography

9319211 PON本提案要求制定一项研究计划，研究扫描全息术和3-D图像编码的基础和应用方面。这些项目是首席研究员在使用光学外差扫描的实时全息记录技术方面先前工作的延续。简而言之，在该技术中，使用两个不同时间频率的光束来扫描对象以提取该对象的全息信息。在本研究中，我们研究和比较了扫描全息信息缩减技术的相干、部分相干和非相干特性，探索了三维编码和多次曝光全息术，并将其扩展到物体的多个全息信息。多波束扫描的优点包括实时操作和大的多路复用能力。在视频率实时全息的背景下，还研究了用于相干再现的电子束寻址空间光调制器与扫描全息记录系统的集成。拟议工作的结果可能导致更好的3-D信息处理和编码，例如在实时3-D图像处理、显微镜、数据存储和获取以及光学遥感领域。

9319211 Poon This proposal requests for a research program on the study of the basic and applied aspects of scanning holography and 3-D image coding. The projects is a continuation of the principal investigator's previous work along the line of real-time holographic recording technique using optical heterodyne scanning. Briefly, in the technique, two optical beams of different temporal frequencies are use to scan an object to extract the holographic information for the object. In the present proposed research we investigate and compare the coherent, partial coherent and incoherent nature of the scanning holographic information reduction techniques, 3-D coding and multiple-exposure holography are explored and extended to multiple holographic information of the object simultaneously. Advantages of multiple-beam scanning includes real-time operation and large multiplexing capability. The integration of an electron-beam-addressed spatial light modulator for coherent reconstruction with the scanning holographic recording system also is investigated in the context of real time holography in video rate. The results of the proposed work could lead to better 3-D information processing and coding such as in the areas of real-time 3-D image processing, microscopy, data storage and acquisition and optical remote sensing.