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A Multi‐Foci Metalens with Polarization‐Rotated Focal Points
Laser & Photonics Reviews ( IF 11.0 ) Pub Date : 2019-10-28 , DOI: 10.1002/lpor.201900182
Xiaofei Zang 1 , Hongzhen Ding 1 , Yuttana Intaravanne 2 , Lin Chen 1 , Yan Peng 1 , Jingya Xie 1 , Qinghong Ke 1 , Alexey V. Balakin 1, 3, 4 , Alexander P. Shkurinov 1, 3, 4 , Xianzhong Chen 2 , Yiming Zhu 1 , Songlin Zhuang 1
Affiliation  

Benefiting from the unprecedented capability of metasurfaces in the manipulation of light propagation, metalenses can provide novel functions that are very challenging or impossible to achieve with conventional lenses. Here, an approach to realizing multi‐foci metalenses is proposed and experimentally demonstrated with polarization‐rotated focal points based on geometric metasurfaces. Multi‐foci metalenses with various polarization rotation directions are developed using silicon pillars with spatially variant orientations. The focusing characteristic and longitudinal polarization‐dependent imaging capability are demonstrated upon the illumination of a linearly polarized light beam. The uniqueness of this multi‐foci metalens with polarization‐rotated focal points may open a new avenue for imaging, sensing, and information processing.

中文翻译:

具有偏振旋转焦点的多焦点金属

得益于超表面在光传播控制方面的空前能力,metalenses可以提供新颖的功能,这些功能对于传统透镜而言是非常具有挑战性或无法实现的。在这里,提出了一种实现多焦点金属感觉的方法,并通过基于几何超表面的偏振旋转焦点进行了实验证明。使用具有空间变化方向的硅柱,开发了具有不同极化旋转方向的多焦点金属传感器。线性偏振光束的照明展示了聚焦特性和纵向偏振相关的成像能力。具有偏振旋转焦点的这种多焦点金属的独特性可能为成像,传感和信息处理开辟新的途径。
更新日期:2019-10-28
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