Dual-polarity plasmonic metalens for visible light
By Xianzhong Chen, Lingling Huang, H. Mühlenbernd, Guixin Li, B. Bai, Qiaofeng Tan, Guofan Jin, Cheng-Wei Qiu, Shuang Zhang, T. Zentgraf. Nature Communications, 2012
1,109 citations recorded by the source corpus.
Surface topography and refractive index profile dictate the deterministic functionality of a lens. The polarity of most lenses reported so far, that is, either positive (convex) or negative (concave), depends on the curvatures of the interfaces. Here we experimentally demonstrate a counter-intuitive dual-polarity flat lens based on helicity-dependent phase discontinuities for circularly polarized light. Specifically, by controlling the helicity of the input light, the positive and negative polarity are interchangeable in one identical flat lens. Helicity-controllable real and virtual focal planes, as well as magnified and demagnified imaging, are observed on the same plasmonic lens at visible and near-infrared wavelengths. The plasmonic metalens with dual polarity may empower advanced research and applications in helicity-dependent focusing and imaging devices, angular-momentum-based quantum information processing and integrated nano-optoelectronics. The wide range of properties encountered in metamaterials make them promising for numerous optical applications. Chenet al. build a plasmonic flat metamaterial lens with an abrupt phase change that functions as a convex lens for one handedness of light and a concave lens for the other.
Subfields: Aerospace Engineering, Biomedical Engineering, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/cf8786298e5935eb5c040ca5a34518d0b9658a86
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Citations in the corpus
- High‐Efficiency Dielectric Huygens’ Surfaces (2015, background): “lications. Indeed, it has been shown recently that tailoring the spatial distribution of phase discontinuities with optical metasurfaces allows for the realization of a flurry of flat optical devices [21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31]. However, the big obstacle in rendering these (mostly p”
- A review of metasurfaces: physics and applications (2016, methodology): “Based on the Pancharatnam-Berry phase, U-shaped and other nano aperture antennas have been used to create a planar lens, which either functions as a focusing or diverging lens depending on the handedness of the incident circular polarization (see figure 4(b)) [45, 61].”
- Addressable metasurfaces for dynamic holography and optical information encryption (2018, background): “Metasurfaces outline a new generation of ultrathin optical elements with exceptional control over the propagation of light( 1-11 ).”