Large-scale achromatic flat lens by light frequency-domain coherence optimization

Flat lenses, including metalens and diffractive lens, have attracted increasing attention due to their ability to miniaturize the imaging devices. However, realizing a large scale achromatic flat lens with high performance still remains a big challenge. Here, we developed a new framework in designin...

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Bibliographic Details
Published in:	Light, science & applications Vol. 11; no. 1; p. 323
Main Authors:	Xiao, Xingjian, Zhao, Yunwei, Ye, Xin, Chen, Chen, Lu, Xinmou, Rong, Yansen, Deng, Junhong, Li, Guixin, Zhu, Shining, Li, Tao
Format:	Journal Article
Language:	English
Published:	London Nature Publishing Group UK 11-11-2022 Springer Nature B.V Nature Publishing Group
Subjects:	639/624/1107/510 639/624/400/1113 Lasers Microwaves Optical and Electronic Materials Optical Devices Optics Optimization Photonics Physics Physics and Astronomy RF and Optical Engineering
Online Access:	Get full text
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Summary:	Flat lenses, including metalens and diffractive lens, have attracted increasing attention due to their ability to miniaturize the imaging devices. However, realizing a large scale achromatic flat lens with high performance still remains a big challenge. Here, we developed a new framework in designing achromatic multi-level diffractive lenses by light coherence optimization, which enables the implementation of large-scale flat lenses under non-ideal conditions. As results, a series achromatic polymer lenses with diameter from 1 to 10 mm are successfully designed and fabricated. The subsequent optical characterizations substantially validate our theoretical framework and show relatively good performance of the centimeter-scale achromatic multi-level diffractive lenses with a super broad bandwidth in optical wavelengths (400–1100 nm). After comparing with conventional refractive lens, this achromatic lens shows significant advantages in white-light imaging performance, implying a new strategy in developing practical planar optical devices. We developed a new framework in designing centimeter-scale achromatic multi-level diffractive lenses by light frequency-domain coherence optimization, which shows significant advantages in white-light imaging performance over the traditional refractive lens.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	2047-7538 2095-5545 2047-7538
DOI:	10.1038/s41377-022-01024-y