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A broadband achromatic metalens in the visible.
Wang, Shuming; Wu, Pin Chieh; Su, Vin-Cent; Lai, Yi-Chieh; Chen, Mu-Ku; Kuo, Hsin Yu; Chen, Bo Han; Chen, Yu Han; Huang, Tzu-Ting; Wang, Jung-Hsi; Lin, Ray-Ming; Kuan, Chieh-Hsiung; Li, Tao; Wang, Zhenlin; Zhu, Shining; Tsai, Din Ping.
Afiliação
  • Wang S; National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, School of Physics, Nanjing University, Nanjing, China.
  • Wu PC; Research Center for Applied Sciences, Academia Sinica, Taipei, Taiwan.
  • Su VC; Department of Electrical Engineering, National United University, Miaoli, Taiwan.
  • Lai YC; Department of Physics, National Taiwan University, Taipei, Taiwan.
  • Chen MK; Department of Physics, National Taiwan University, Taipei, Taiwan.
  • Kuo HY; Department of Physics, National Taiwan University, Taipei, Taiwan.
  • Chen BH; Department of Physics, National Taiwan University, Taipei, Taiwan.
  • Chen YH; Department of Physics, National Taiwan University, Taipei, Taiwan.
  • Huang TT; Research Center for Applied Sciences, Academia Sinica, Taipei, Taiwan.
  • Wang JH; Department of Electrical Engineering and Graduate Institute of Electronics Engineering, National Taiwan University, Taipei, Taiwan.
  • Lin RM; Department of Electronic Engineering, Chang Gung University, Taoyuan, Taiwan.
  • Kuan CH; Department of Electrical Engineering and Graduate Institute of Electronics Engineering, National Taiwan University, Taipei, Taiwan.
  • Li T; National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, School of Physics, Nanjing University, Nanjing, China.
  • Wang Z; Collaborative Innovation Center of Advanced Microstructures, Nanjing, China.
  • Zhu S; National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, School of Physics, Nanjing University, Nanjing, China.
  • Tsai DP; Collaborative Innovation Center of Advanced Microstructures, Nanjing, China.
Nat Nanotechnol ; 13(3): 227-232, 2018 03.
Artigo em Inglês | MEDLINE | ID: mdl-29379204
ABSTRACT
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.

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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Idioma: Inglês Revista: Nat Nanotechnol Ano de publicação: 2018 Tipo de documento: Artigo País de afiliação: China