Design of All-Dielectric Long-wave infrared Wide-angle Metalens

Author:

Zhang Ning,Li Qingzhi,Chen Jun,Tang Feng,Wu Jingjun,Ye Xin,Yang Liming

Abstract

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 sub-wavelength scale, named metalens. They are poised to revolutionize optics by enabling complex low-cost systems. However, there are monochromatic severe aberrations in the metasurfaces. In this paper,the long-wave infrared optical system coma is eliminated through a single-layer metasurface. By changing the phase function,this metalens have a numerical aperture of 0.89,a focal length of 150 μm,and a field of view of 120° (0.4@60lp/mm) that enables diffraction-limited monochromatic imaging along the focal plane at a wavelength of 10.6μm. And the designed metasurface maintains a favorable MTF value at different angles. This equipment can be widely used in imaging and industrial processing.

Publisher

IOP Publishing

Subject

General Physics and Astronomy

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Wide-Field-of-View, Large-Area Long-Wave Infrared Silicon Metalenses;ACS Photonics;2024-04-09

2. Analytical design framework for metasurface projection optics;Journal of the Optical Society of America B;2023-07-31

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