Correction of Aberrations via Polarization in Single Layer Metalenses
Correction of Aberrations via Polarization in Single Layer Metalenses
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DOI：
10.1002/adom.202102555
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发表时间：
2022-03
影响因子：
9
通讯作者：
A. Martins;Kezheng Li;Guilherme S. Arruda;D. Conteduca;Haowen Liang;Juntao Li;B. Borges;T. Krauss;E. Martins
中科院分区：
文献类型：
--
作者：
A. Martins;Kezheng Li;Guilherme S. Arruda;D. Conteduca;Haowen Liang;Juntao Li;B. Borges;T. Krauss;E. Martins
光学系统中多个像差的校正需要不同的光学元件，这增加了其成本和复杂性。超表面有望为小型化和低成本光学系统提供新功能。与大体积同类产品相比，超表面的一个关键优势是能够响应光的偏振，这为光学设计增加了新的自由度。这里表明，偏振控制使得形状双折射超透镜能够仅使用单个元件来校正球面像差和离轴像差，而这对于体光学器件来说是不可能的。超透镜将两个相位分布编码到同一表面上，从而允许从高分辨率切换到宽视场操作。这种在单层中获得高分辨率和宽视场的能力是小型化光学系统集成的重要一步，该系统可能有许多应用，例如在显微镜和内窥镜检查中。
The correction of multiple aberrations in an optical system requires different optical elements, which increases its cost and complexity. Metasurfaces hold great promise to providing new functionality for miniaturized and low‐cost optical systems. A key advantage over their bulk counterparts is the metasurface's ability to respond to the polarization of light, which adds a new degree of freedom to the optical design. Here, it is shown that polarization control enables a form‐birefringent metalens to correct for both spherical and off‐axis aberrations using a single element only, which is not possible with bulk optics. The metalens encodes two phase profiles onto the same surface, thus allowing switching from high resolution to wide field of view operation. Such ability to obtain both high resolution and wide field of view in a single layer is an important step towards integration of miniaturized optical systems, which may find many applications, e.g., in microscopy and endoscopy.