Highly efficient holograms based on c-Si metasurfaces in the visible range
| Autor: | Joao P. do Carmo, Luiz Gonçalves Neto, Ben-Hur V. Borges, Fernando L. Teixeira, Emiliano R. Martins, Augusto Martins, Achiles F. da Mota, Juntao Li, Yin Wang |
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| Rok vydání: | 2018 |
| Předmět: |
Diffraction
Fabrication Materials science business.industry Holography 02 engineering and technology 021001 nanoscience & nanotechnology Diffraction efficiency 01 natural sciences Atomic and Molecular Physics and Optics law.invention 010309 optics Wavelength Optics Transmission (telecommunications) law 0103 physical sciences Visible range ENGENHARIA ELÉTRICA 0210 nano-technology business Diffraction grating |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| Popis: | This paper reports on the first hologram in transmission mode based on a c-Si metasurface in the visible range. The hologram shows high fidelity and high efficiency, with measured transmission and diffraction efficiencies of ~65% and ~40%, respectively. Although originally designed to achieve full phase control in the range [0-2π] at 532 nm, these holograms have also performed well at 444.9 nm and 635 nm. The high tolerance to both fabrication and wavelength variations demonstrate that holograms based on c-Si metasurfaces are quite attractive for diffractive optics applications, and particularly for full-color holograms. |
| Databáze: | OpenAIRE |
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