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A broadband achromatic polarization-insensitive metalens consisting of anisotropic nanostructures

Author

Listed:
  • Wei Ting Chen

    (Harvard University)

  • Alexander Y. Zhu

    (Harvard University)

  • Jared Sisler

    (Harvard University
    University of Waterloo)

  • Zameer Bharwani

    (Harvard University
    University of Waterloo)

  • Federico Capasso

    (Harvard University)

Abstract

Metasurfaces have attracted widespread attention due to an increasing demand of compact and wearable optical devices. For many applications, polarization-insensitive metasurfaces are highly desirable, and appear to limit the choice of their constituent elements to isotropic nanostructures. This greatly restricts the number of geometric parameters available in design. Here, we demonstrate a polarization-insensitive metalens using otherwise anisotropic nanofins which offer additional control over the dispersion and phase of the output light. As a result, we can render a metalens achromatic and polarization-insensitive across nearly the entire visible spectrum from wavelength λ = 460 nm to 700 nm, while maintaining diffraction-limited performance. The metalens is comprised of just a single layer of TiO2 nanofins and has a numerical aperture of 0.2 with a diameter of 26.4 µm. The generality of our polarization-insensitive design allows it to be implemented in a plethora of other metasurface devices with applications ranging from imaging to virtual/augmented reality.

Suggested Citation

  • Wei Ting Chen & Alexander Y. Zhu & Jared Sisler & Zameer Bharwani & Federico Capasso, 2019. "A broadband achromatic polarization-insensitive metalens consisting of anisotropic nanostructures," Nature Communications, Nature, vol. 10(1), pages 1-7, December.
  • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-08305-y
    DOI: 10.1038/s41467-019-08305-y
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    Cited by:

    1. Yueqiang Hu & Yuting Jiang & Yi Zhang & Xing Yang & Xiangnian Ou & Ling Li & Xianghong Kong & Xingsi Liu & Cheng-Wei Qiu & Huigao Duan, 2023. "Asymptotic dispersion engineering for ultra-broadband meta-optics," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    2. Zhaoyi Li & Raphaël Pestourie & Joon-Suh Park & Yao-Wei Huang & Steven G. Johnson & Federico Capasso, 2022. "Inverse design enables large-scale high-performance meta-optics reshaping virtual reality," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    3. Brandon Born & Sung-Hoon Lee & Jung-Hwan Song & Jeong Yub Lee & Woong Ko & Mark L. Brongersma, 2023. "Off-axis metasurfaces for folded flat optics," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    4. Haoran Ren & Jaehyuck Jang & Chenhao Li & Andreas Aigner & Malte Plidschun & Jisoo Kim & Junsuk Rho & Markus A. Schmidt & Stefan A. Maier, 2022. "An achromatic metafiber for focusing and imaging across the entire telecommunication range," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    5. Huan Lu & Jiwei Zhao & Bin Zheng & Chao Qian & Tong Cai & Erping Li & Hongsheng Chen, 2023. "Eye accommodation-inspired neuro-metasurface focusing," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
    6. Okan Atalar & Raphaël Laer & Amir H. Safavi-Naeini & Amin Arbabian, 2022. "Longitudinal piezoelectric resonant photoelastic modulator for efficient intensity modulation at megahertz frequencies," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    7. Corey A. Richards & Christian R. Ocier & Dajie Xie & Haibo Gao & Taylor Robertson & Lynford L. Goddard & Rasmus E. Christiansen & David G. Cahill & Paul V. Braun, 2023. "Hybrid achromatic microlenses with high numerical apertures and focusing efficiencies across the visible," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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