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Chin. Phys. B, 2022, Vol. 31(7): 074212    DOI: 10.1088/1674-1056/ac4026

Design of an all-dielectric long-wave infrared wide-angle metalens

Ning Zhang(张宁), Qingzhi Li(李青芝), Jun Chen(陈骏), Feng Tang(唐烽),Jingjun Wu(伍景军), Xin Ye(叶鑫), and Liming Yang(杨李茗)
Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900, China
Abstract  Optical metasurfaces are two-dimensional arrays of nano-scatterers that modify optical wavefronts at subwavelength spatial resolution. They achieve the effect of focusing through phase control under a subwavelength scale, and are called metalenses. They are poised to revolutionize optics by enabling complex low-cost systems. However, there are severe monochromatic aberrations in the metasurfaces. In this paper, the coma of the long-wave infrared optical system is eliminated through a single-layer metasurface. By changing the phase function, this metalens has a numerical aperture of 0.89, a focal length of 150 μm and a field of view of 120° (0.4@60 line pairs/mm) that enables diffraction-limited monochromatic imaging along the focal plane at a wavelength of 10.6 μm. The designed metasurface maintains a favorable value of the modulation transfer function at different angles. This equipment can be widely used in imaging and industrial processing.
Keywords:  long-wave infrared      all-dielectric metasurface      aberrations      metalens  
Received:  30 August 2021      Revised:  30 November 2021      Accepted manuscript online:  05 December 2021
PACS:  42.15.Fr (Aberrations)  
  42.79.Bh (Lenses, prisms and mirrors)  
  95.85.Hp (Infrared (3-10 μm))  
  51.70.+f (Optical and dielectric properties)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 61875087) and Innovation and Development Foundation of China Academy of Engineering Physics (Grant No. CX20200021).
Corresponding Authors:  Xin Ye, Liming Yang     E-mail:;

Cite this article: 

Ning Zhang(张宁), Qingzhi Li(李青芝), Jun Chen(陈骏), Feng Tang(唐烽),Jingjun Wu(伍景军), Xin Ye(叶鑫), and Liming Yang(杨李茗) Design of an all-dielectric long-wave infrared wide-angle metalens 2022 Chin. Phys. B 31 074212

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