Broadband achromatic optical metasurface devices
By Shuming Wang, P. Wu, V. Su, Y. Lai, Cheng Hung Chu, Jia-Wern Chen, Shen-Hung Lu, Ji Chen, Beibei Xu, C. Kuan and 3 more. Nature Communications, 2017
972 citations recorded by the source corpus.
Among various flat optical devices, metasurfaces have presented their great ability in efficient manipulation of light fields and have been proposed for variety of devices with specific functionalities. However, due to the high phase dispersion of their building blocks, metasurfaces significantly suffer from large chromatic aberration. Here we propose a design principle to realize achromatic metasurface devices which successfully eliminate the chromatic aberration over a continuous wavelength region from 1200 to 1680 nm for circularly-polarized incidences in a reflection scheme. For this proof-of-concept, we demonstrate broadband achromatic metalenses (with the efficiency on the order of ∼12%) which are capable of focusing light with arbitrary wavelength at the same focal plane. A broadband achromatic gradient metasurface is also implemented, which is able to deflect wide-band light by the same angle. Through this approach, various flat achromatic devices that were previously impossible can be realized, which will allow innovation in full-color detection and imaging. Metasurfaces suffer from large chromatic aberration due to the high phase dispersion of their building blocks, limiting their applications. Here, Wang et al. design achromatic metasurface devices which eliminate the chromatic aberration over a continuous region from 1200 to 1680 nm in a reflection schleme.
Subfields: Aerospace Engineering, Biomedical Engineering, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/74931df2f9bb31b8b90daa95a8e134dd42149f0e
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Citations in the corpus
- Metasurface holography: from fundamentals to applications (2018, background): “e color holography based on broadband resonances usually requires delicate tuning with off-axis illumination, recent demonstrations showed the ability of metasurfaces to overcome chromatic aberration [79, 80], which can be potentially helpful in the development of compact metasurface color holograph”
- MEMS-tunable dielectric metasurface lens (2017, methodology): “In addition, the recently introduced concept of phase-dispersion control 67 – 69 can be used to increase the operation bandwidth of the metasurface lenses by correcting the chromatic aberrations over a continuous bandwidth.”