Principle Verification and First Image Acquisition of Digital Multispectral Holography based on Synthetic Aperture Technique

基于合成孔径技术的数字多光谱全息原理验证及首次图像采集

基本信息

批准号：
15360024
负责人：
YOSHIMORI Kyu
金额：
$ 9.6万
依托单位：
IWATE UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

The purpose of this research is to accomplish, both theoretically and experimentally, a new three-dimensional imaging spectroscopy based on interferometric technique and synthetic aperture processing. The target light source, occupying certain part of space, is assumed to be polychromatic and spatially incoherent.Throughout the period of research, we have built up an experimental system to verify new proposed method and its physical basis. We have shown that spatial distributions of amplitude and phase of certain monochromatic component of optical wave propagated from light source, can be retrieved by applying proposed synthetic aperture technique to a five-dimensional ingterferogram measured with two-axes wave-front folding interferometer. We also found that, for improving the accuracy of observed phase distribution, in particular, it is desirable to develop a high through-put interferometric measurement system to shorten the measurement period.In addition to above results, a novel method was invented to obtain alternative interferograms without changing detector position. The synthetic aperture technique is also modified for the new method. The performance of the new method was verified theoretically, and the new method is considered to improve the through put, and to simplify the interferometric measurement systemFor systematic description of physical basis of multidimensional imaging spectroscopy, further investigation is required for how source information is included in a variety of multidimensional interferograms.

这项研究的目的是在理论上和实验上完成基于干涉技术和合成孔径处理的新的三维成像光谱。占据空间某些部分的目标光源被认为是多色的，在空间上是不一致的。在研究期间，我们建立了一个实验系统来验证新提出的方法及其物理基础。我们已经表明，可以通过将提出的合成孔径技术应用于用两轴 - 前折叠的折叠式折叠仪测量的五维摄入术来检索幅度和某些单色单色分量的空间分布。我们还发现，为了提高观察到的相分布的准确性，特别是希望开发出高的贯穿干涉测量系统以缩短测量周期。此外，在上述结果中，发明了一种新的方法来获得替代性干涉图，而无需更改检测器位置。新方法还修改了合成孔技术。理论上对新方法的性能进行了验证，并考虑了新方法来改善通过PUT，并简化了对多维成像光谱的物理基础的系统描述的干涉测量系统，需要进一步研究来源信息中的源信息如何包含在各种多维干涉图中。