A broadband achromatic metalens in the visible

Shuming Wang, Pin Chieh Wu, Vin Cent Su, Yi Chieh Lai, Mu Ku Chen, Hsin Yu Kuo, Bo Han Chen, Yu Han Chen, Tzu Ting Huang, Jung Hsi Wang, Ray Ming Lin, Chieh Hsiung Kuan, Tao Li, Zhenlin Wang, Shining Zhu, Din Ping Tsai

研究成果: Article同行評審

1244 引文 斯高帕斯(Scopus)


Metalenses consist of an array of optical nanoantennas on a surface capable of manipulating the properties of an incoming light wavefront. Various flat optical components, such as polarizers, optical imaging encoders, tunable phase modulators and a retroreflector, have been demonstrated using a metalens design. An open issue, especially problematic for colour imaging and display applications, is the correction of chromatic aberration, an intrinsic effect originating from the specific resonance and limited working bandwidth of each nanoantenna. As a result, no metalens has demonstrated full-colour imaging in the visible wavelength. Here, we show a design and fabrication that consists of GaN-based integrated-resonant unit elements to achieve an achromatic metalens operating in the entire visible region in transmission mode. The focal length of our metalenses remains unchanged as the incident wavelength is varied from 400 to 660 nm, demonstrating complete elimination of chromatic aberration at about 49% bandwidth of the central working wavelength. The average efficiency of a metalens with a numerical aperture of 0.106 is about 40% over the whole visible spectrum. We also show some examples of full-colour imaging based on this design.

頁(從 - 到)227-232
期刊Nature Nanotechnology
出版狀態Published - 2018 3月 1

All Science Journal Classification (ASJC) codes

  • 生物工程
  • 原子與分子物理與光學
  • 生物醫學工程
  • 一般材料科學
  • 凝聚態物理學
  • 電氣與電子工程


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