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

作　　者：Ning Zhang Qingzhi Li Jun Chen Feng Tang Jingjun Wu Xin Ye Liming Yang 张宁;李青芝;陈骏;唐烽;伍景军;叶鑫;杨李茗(Research Center of Laser Fusion,China Academy of Engineering Physics,Mianyang,Sichuan 621900,China)

机构地区：[1]Research Center of Laser Fusion,China Academy of Engineering Physics,Mianyang,Sichuan 621900,China

出　　处：《Chinese Physics B》2022年第7期366-370,共5页中国物理B（英文版）

基　　金：the National Natural Science Foundation of China(Grant No.61875087);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 150μm 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 10.6μm.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 

分 类 号：TH74[机械工程—光学工程]