Ansari Muhammad Afnan, Ahmed Hammad, Li Yan, Wang Guanchao, Callaghan Jemma E, Wang Ruoxing, Downing James, Chen Xianzhong
Institute of Photonics and Quantum Sciences, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK.
School of Materials, Zhengzhou University of Aeronautics, Zhengzhou, 450015, China.
Light Sci Appl. 2024 Sep 2;13(1):224. doi: 10.1038/s41377-024-01565-4.
Metalenses can integrate the functionalities of multiple optical components thanks to the unprecedented capability of optical metasurfaces in light control. With the rapid development of optical metasurfaces, metalenses continue to evolve. Polarization and color play a very important role in understanding optics and serve as valuable tools for gaining insights into our world. Benefiting from the design flexibility of metasurfaces, we propose and experimentally demonstrate a super metalens that can realize multifaceted control of focal points along any 3D curved trajectory. The wavelengths and polarization states of all focal points are engineered in a desirable manner. The super metalens can simultaneously realize customized 3D positioning, polarization states, and wavelengths of focal points, which are experimentally demonstrated with incident wavelengths ranging from 501 to 700 nm. We further showcase the application of the developed super metalenses in 3D optical distance measurement. The compact nature of metasurfaces and unique properties of the proposed super metalenses hold promise to dramatically miniaturize and simplify the optical architecture for applications in optical metrology, imaging, detection, and security.
由于光学超表面在光控制方面具有前所未有的能力，金属透镜可以集成多个光学元件的功能。随着光学超表面的快速发展，金属透镜也在不断演进。偏振和颜色在理解光学中起着非常重要的作用，并且是洞察我们周围世界的宝贵工具。受益于超表面的设计灵活性，我们提出并通过实验证明了一种超级金属透镜，它可以实现沿任何三维弯曲轨迹对焦点的多方面控制。所有焦点的波长和偏振态都以理想的方式进行了设计。这种超级金属透镜可以同时实现焦点的定制三维定位、偏振态和波长，我们在501至700纳米的入射波长范围内通过实验证明了这一点。我们进一步展示了所开发的超级金属透镜在三维光学距离测量中的应用。超表面的紧凑特性以及所提出的超级金属透镜的独特性质有望极大地缩小并简化用于光学计量、成像、检测和安全等应用的光学架构。
