Photonic Multitasking Interleaved Si Nanoantenna Phased Array
| Autor: | Aaron L. Holsteen, Elhanan Maguid, Mark L. Brongersma, Pieter G. Kik, Gordon Wetzstein, Dianmin Lin, Erez Hasman |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Interleaving Phased-array optics business.industry Aperture Phased array Mechanical Engineering Phase (waves) Physics::Optics Bioengineering 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Spatial multiplexing 010309 optics Optics 0103 physical sciences Optoelectronics General Materials Science Photonics 0210 nano-technology business Image resolution |
| Zdroj: | Nano Letters. 16:7671-7676 |
| ISSN: | 1530-6992 1530-6984 |
| DOI: | 10.1021/acs.nanolett.6b03505 |
| Popis: | Metasurfaces provide unprecedented control over light propagation by imparting local, space-variant phase changes on an incident electromagnetic wave. They can improve the performance of conventional optical elements and facilitate the creation of optical components with new functionalities and form factors. Here, we build on knowledge from shared aperture phased array antennas and Si-based gradient metasurfaces to realize various multifunctional metasurfaces capable of achieving multiple distinct functions within a single surface region. As a key point, we demonstrate that interleaving multiple optical elements can be accomplished without reducing the aperture of each subelement. Multifunctional optical elements constructed from Si-based gradient metasurface are realized, including axial and lateral multifocus geometric phase metasurface lenses. We further demonstrate multiwavelength color imaging with a high spatial resolution. Finally, optical imaging functionality with simultaneous color separation has been obtained by using multifunctional metasurfaces, which opens up new opportunities for the field of advanced imaging and display. |
| Databáze: | OpenAIRE |
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