Metalens-Based Miniaturized Optical Systems

Micromachines

Bo Li¹  Zhen Qiu¹  Wibool Piyawattanametha² 

[1] Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48823, USA;Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI 48823, USA;

关键词: metasurface;    metalens;    field of view (FOV);    achromatic;    Huygens’ metalens;    bio-optical imaging;    optical coherence tomography;    confocal;    two-photon;    spectrometer;   

DOI  :  10.3390/mi10050310

来源: DOAJ

【 摘 要 】

Metasurfaces have been studied and widely applied to optical systems. A metasurface-based flat lens (metalens) holds promise in wave-front engineering for multiple applications. The metalens has become a breakthrough technology for miniaturized optical system development, due to its outstanding characteristics, such as ultrathinness and cost-effectiveness. Compared to conventional macro- or meso-scale optics manufacturing methods, the micro-machining process for metalenses is relatively straightforward and more suitable for mass production. Due to their remarkable abilities and superior optical performance, metalenses in refractive or diffractive mode could potentially replace traditional optics. In this review, we give a brief overview of the most recent studies on metalenses and their applications with a specific focus on miniaturized optical imaging and sensing systems. We discuss approaches for overcoming technical challenges in the bio-optics field, including a large field of view (FOV), chromatic aberration, and high-resolution imaging.

【 授权许可】

Unknown