High-Resolution Metalens Imaging Polarimetry,Nano Letters

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High-Resolution Metalens Imaging Polarimetry
Nano Letters ( IF 9.6 ) Pub Date : 2023-11-29 , DOI: 10.1021/acs.nanolett.3c03258
Zhaorui Huang ₁ , Yaqin Zheng ₂ , Junhao Li ₁ , Yongzhi Cheng ₃ , Jian Wang ₁ , Zhang-Kai Zhou ₂ , Lin Chen ₁

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Imaging polarimeters find many critical applications in applications ranging from remote sensing to biological detection. Metasurfaces have been proposed as a compact approach for imaging polarimeters, but prior strategies suffer from low imaging resolution. Here, we propose an interleaved metalens configuration for polarization imaging where three-row metasurface units within a group individually interact with three pairs of orthogonal polarization channels. The optical paths between the object and adjacent three-row metasurfaces are nearly equal, allowing the construction of a metalens polarimeter with an unlimited numerical aperture (NA), which is beneficial for high-resolution polarization imaging. The metalens polarimeter fabricated by crystalline silicon nanostructures has a NA of 0.51 at 632.8 nm and achieves an imaging resolution of up to a 1.2-fold wavelength. Polarimetric microscopy experiments demonstrate that metalens polarimeters can realize high-resolution polarization imaging for various microscopic samples. This study offers a promising solution for high-resolution metasurface polarization imaging, with the potential for widespread applications.

中文翻译：

高分辨率超透镜成像旋光测量

成像旋光仪在从遥感到生物检测的应用中发现了许多关键应用。超表面已被提议作为成像旋光计的紧凑方法，但先前的策略存在成像分辨率低的问题。在这里，我们提出了一种用于偏振成像的交错超透镜配置，其中一组内的三行超表面单元单独与三对正交偏振通道相互作用。物体和相邻三行超表面之间的光路几乎相等，允许构建具有无限数值孔径（NA）的超透镜偏振计，这有利于高分辨率偏振成像。由晶体硅纳米结构制造的超透镜偏振计在632.8 nm处的NA为0.51，并实现高达1.2倍波长的成像分辨率。偏振显微镜实验表明，超透镜偏振仪可以实现各种显微样品的高分辨率偏振成像。这项研究为高分辨率超表面偏振成像提供了一种有前途的解决方案，具有广泛应用的潜力。

更新日期：2023-11-29

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