中国物理B ›› 2022, Vol. 31 ›› Issue (7): 74212-074212.doi: 10.1088/1674-1056/ac4026

• • 上一篇    下一篇

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)   

  1. Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900, China
  • 收稿日期:2021-08-30 修回日期:2021-11-30 接受日期:2021-12-05 出版日期:2022-06-09 发布日期:2022-07-01
  • 通讯作者: Xin Ye, Liming Yang E-mail:yexin@caep.cn;group_ye@163.com
  • 基金资助:
    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).

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)   

  1. Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900, China
  • Received:2021-08-30 Revised:2021-11-30 Accepted:2021-12-05 Online:2022-06-09 Published:2022-07-01
  • Contact: Xin Ye, Liming Yang E-mail:yexin@caep.cn;group_ye@163.com
  • Supported by:
    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).

摘要: 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.

关键词: long-wave infrared, all-dielectric metasurface, aberrations, metalens

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.

Key words: long-wave infrared, all-dielectric metasurface, aberrations, metalens

中图分类号:  (Aberrations)

  • 42.15.Fr
42.79.Bh (Lenses, prisms and mirrors) 95.85.Hp (Infrared (3-10 μm)) 51.70.+f (Optical and dielectric properties)