中国光学（中英文）2024，Vol.17Issue(1)：52-60,9.DOI:10.37188/CO.2023-0039
离轴超构透镜设计与特性分析
Design and characteristic analysis of off-axis meta-lens
摘要
Abstract
We propose a design method for off-axis meta-lens and analyze the effects of numerical aperture,off-axis angle,and incident wavelength on the simulation deviation,resolution and focusing efficiency of off-axis meta-lenses.Several off-axis meta-lenses with parameters NA=0.408 α=13°,NA=0.180 α=13°,NA=0.408 α=20°were simulated by Lumerical,respectively.The simulation results indicate that the off-axis angle is directly proportional to the spectral resolution.As the angle increases,the spectral resolution be-comes better,but the focusing efficiency decreases.A smaller numerical aperture result in a smaller cover-age of the phase distribution,leading to a larger deviation between the simulation and theory.Designers need to reasonably balance parameters such as numerical aperture and off-axis angle according to the require-ments to finally achieve the desired effect.This study has an important reference value for theoretical analys-is and parameter design of off-axis meta-lens in practical application.关键词
超构透镜/离轴超构透镜/仿真分析Key words
meta-lens/off-axis meta-lens/simulation analysis分类
数理科学引用本文复制引用
胡金高娃,赵尚男,王灵杰,叶昊坤,张建萍,张新..离轴超构透镜设计与特性分析[J].中国光学（中英文）,2024,17(1):52-60,9.基金项目
国家自然科学基金项目(No.62005271)Supported by the National Natural Science Foundation of China(No.62005271) （No.62005271）
