4.7 Article

Single-shot super-resolution quantitative phase imaging allowed by coherence gate shaping

期刊

APL PHOTONICS
卷 8, 期 4, 页码 -

出版社

AIP Publishing
DOI: 10.1063/5.0127950

关键词

-

向作者/读者索取更多资源

Biomedical and metasurface researchers commonly use quantitative phase imaging (QPI) as their primary imaging technique due to its high-throughput, label-free, and quantitative nature. However, achieving super-resolution in QPI has been a challenge. In this study, a method for real-time super-resolution QPI is presented, achieved through shaping the coherence gate in the holographic microscope with partially coherent illumination. This method demonstrates resolution improvement on both simulated and experimental data, and shows practical feasibility in imaging biological specimens.
Biomedical and metasurface researchers repeatedly reach for quantitative phase imaging (QPI) as their primary imaging technique due to its high-throughput, label-free, quantitative nature. So far, very little progress has been made toward achieving super-resolution in QPI. However, the possible super-resolving QPI would satisfy the need for quantitative observation of previously unresolved biological specimen features and allow unprecedented throughputs in the imaging of dielectric metasurfaces. Here we present a method capable of real-time super-resolution QPI, which we achieve by shaping the coherence gate in the holographic microscope with partially coherent illumination. Our approach is based on the fact that the point spread function (PSF) of such a system is a product of the diffraction-limited spot and the coherence-gating function, which is shaped similarly to the superoscillatory hotspot. The product simultaneously produces the PSF with a super-resolution central peak and minimizes sidelobe effects commonly devaluating the superoscillatory imaging. The minimization of sidelobes and resolution improvement co-occur in the entire field of view. Therefore, for the first time, we achieve a single-shot widefield super-resolution QPI. We demonstrate here resolution improvement on simulated as well as experimental data. A phase resolution target image shows a resolving power improvement of 19%. Finally, we show the practical feasibility by applying the proposed method to the imaging of biological specimens.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据