Transmission mode synthetic aperture interferometry using a compact coherent imager and switched fiber-optic illumination
Transmission mode synthetic aperture interferometry using a compact coherent imager and switched fiber-optic illumination
复制标题
使用紧凑型相干成像仪和开关光纤照明的传输模式合成孔径干涉测量
DOI：
10.1016/j.optlaseng.2023.107855
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发表时间：
2024
影响因子：
4.6
通讯作者：
Garcia-Armenta J
中科院分区：
文献类型：
--
作者：
Garcia-Armenta J
本文讨论了一种采用廉价电信技术的合成孔径干涉测量（SAI）的模块化实现，该技术可扩展用于具有任意大视场的光学仪器。利用多个图像传感器和多个照明源，传输和反射SAI几何形状，能够模拟常规干涉显微镜的相衬和干涉模式，被考虑。这些几何形状的点扩散和传输特性在传输模式仪器的情况下进行了说明。结果表明，虽然成像是严格依赖于场的（即位移变量），但模块化仪器的响应是周期性的，并且通过仔细选择照明和传感器定位可以使其成为准位移不变的。我们在一个由单个相干成像仪组成的传输配置中演示了SAI，该成像仪以全息方式记录了从测试目标散射的场，这些场依次被16种不同的平面波照射。这种设置相当于一个较大的SAI系统的单个模块，并且由于单个重建图像中的亮场区域重叠，因此提供了一个理想的平台来检查照明中倾斜和相位偏移误差的影响。通过应用一阶校正并假设重叠区域上的相位连续性，我们证明了SAI重建的显著改进。
This paper discusses a modular implementation of synthetic aperture interferometry (SAI) using inexpensive telecommunications technologies that can be expanded for use in optical instruments with arbitrarily large fields of view. Exploiting multiple image sensors and multiple illumination sources, transmission and reflection SAI geometries, capable of emulating the phase contrast and interference modes of conventional interference microscopes, are considered. The point-spread and transfer characteristics of these geometries are illustrated for the case of a transmission mode instrument. It is shown that although imaging is strictly field dependent (i.e. shift-variant), the response of modular instruments is periodic and with careful choice of illumination and sensor positioning can be made quasi shift-invariant. We demonstrate SAI in a transmission configuration comprising of a single coherent imager that holographically records the field scattered from a test target sequentially illuminated by 16 different plane waves. This set-up is equivalent to a single module of a larger SAI system and since brightfield regions in the individual reconstructed images overlap, provides an ideal platform to examine the effect of tilt and phase offset errors in the illumination. By applying a first order correction and assuming phase continuity over the overlapping regions, we demonstrate a significant improvement in the SAI reconstruction.
I 合成孔径光学
DOI：
--
发表时间：
1970
期刊：
影响因子：
--
作者：
J. Goodman
通讯作者：
J. Goodman
具有大视场的相干成像仪模块，适用于合成孔径干涉测量应用。
影响因子：
3.8
作者：
Garcia-Armenta J
通讯作者：
Garcia-Armenta J
影响因子：
3.8
作者：
Hillman, Timothy R.;Gutzler, Thomas;Sampson, David D.
通讯作者：
Sampson, David D.