Recent advancements of metalenses for functional imaging

IF 13.4 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Nano Convergence Pub Date : 2023-05-24 DOI:10.1186/s40580-023-00372-8

Dongmin Jeon, Kilsoo Shin, Seong-Won Moon, Junsuk Rho

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引用次数: 4

Abstract

Metasurfaces can modulate light with periodically arranged subwavelength scatterers, and they can generate arbitrary wavefronts. Therefore, they can be used to realize various optical components. In particular, metasurfaces can be used to realize lenses, so-called metalenses. In the last decade, metalenses have been actively studied and developed. In this review, we firstly introduce the fundamental principles of metalenses in terms of materials, phase modulation method, and design method. Based on these principles, the functionalities and the applications can consequently be realized. Metalenses have a much larger number of degrees of freedom compared with that of existing refractive or diffractive lenses. Thus, they afford functionalities such as tunability, high numerical aperture, and aberration correction. Metalenses with these functionalities can be applied in various optical systems such as imaging systems and spectrometers. Finally, we discuss the future applications of metalenses.

Graphical Abstract

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超透镜在功能成像中的最新进展

超表面可以用周期性排列的亚波长散射体调制光，并且可以产生任意波前。因此，它们可以用来实现各种光学元件。特别地，超表面可以用来实现透镜，即所谓的超透镜。近十年来，超构透镜得到了积极的研究和开发。本文首先从材料、相位调制方法和设计方法等方面介绍了超透镜的基本原理。基于这些原则，可以实现功能和应用程序。与现有的折射透镜或衍射透镜相比，超透镜具有更大的自由度。因此，它们提供了可调性、高数值孔径和像差校正等功能。具有这些功能的超透镜可以应用于各种光学系统，如成像系统和光谱仪。最后，讨论了超透镜的应用前景。图形抽象

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来源期刊

Nano Convergence Engineering-General Engineering

CiteScore

15.90

自引率

2.60%

发文量

审稿时长

13 weeks

期刊介绍： Nano Convergence is an internationally recognized, peer-reviewed, and interdisciplinary journal designed to foster effective communication among scientists spanning diverse research areas closely aligned with nanoscience and nanotechnology. Dedicated to encouraging the convergence of technologies across the nano- to microscopic scale, the journal aims to unveil novel scientific domains and cultivate fresh research prospects. Operating on a single-blind peer-review system, Nano Convergence ensures transparency in the review process, with reviewers cognizant of authors' names and affiliations while maintaining anonymity in the feedback provided to authors.