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A hybrid achromatic metalens

Author

Listed:
  • F. Balli

    (University of Kentucky)

  • M. Sultan

    (University of Kentucky)

  • Sarah K. Lami

    (University of Kentucky)

  • J. T. Hastings

    (University of Kentucky)

Abstract

Metalenses, ultra-thin optical elements that focus light using subwavelength structures, have been the subject of a number of recent investigations. Compared to their refractive counterparts, metalenses offer reduced size and weight, and new functionality such as polarization control. However, metalenses that correct chromatic aberration also suffer from markedly reduced focusing efficiency. Here we introduce a Hybrid Achromatic Metalens (HAML) that overcomes this trade-off and offers improved focusing efficiency over a broad wavelength range from 1000–1800 nm. HAMLs can be designed by combining recursive ray-tracing and simulated phase libraries rather than computationally intensive global search algorithms. Moreover, HAMLs can be fabricated in low-refractive index materials using multi-photon lithography for customization or using molding for mass production. HAMLs demonstrated diffraction limited performance for numerical apertures of 0.27, 0.11, and 0.06, with average focusing efficiencies greater than 60% and maximum efficiencies up to 80%. A more complex design, the air-spaced HAML, introduces a gap between elements to enable even larger diameters and numerical apertures.

Suggested Citation

  • F. Balli & M. Sultan & Sarah K. Lami & J. T. Hastings, 2020. "A hybrid achromatic metalens," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-17646-y
    DOI: 10.1038/s41467-020-17646-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. Mengjun Liu & Ruizhi Yang & Zhenghao Guo & Kexu Chen & Haoqiang Feng & Han Lu & Shijian Huang & Minmin Zhang & Huapeng Ye & Lingling Shui, 2024. "Dynamic photomask directed lithography based on electrically stimulated nematic liquid crystal architectures," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    3. Aleksandr Barulin & Yeseul Kim & Dong Kyo Oh & Jaehyuck Jang & Hyemi Park & Junsuk Rho & Inki Kim, 2024. "Dual-wavelength metalens enables Epi-fluorescence detection from single molecules," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    4. Shengyuan Chang & Lidan Zhang & Yao Duan & Md Tarek Rahman & Abrar Islam & Xingjie Ni, 2024. "Achromatic metalenses for full visible spectrum with extended group delay control via dispersion-matched layers," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    5. 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.
    6. 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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