Optical performance of synthetic aperture metalens based on hybrid unit-cells

Chen Yi Yu, Yen Chun Chen, Qiu Chun Zeng, Wei Lun Hsu, Chih Ming Wang

研究成果: 雜誌貢獻期刊論文同行評審

1 引文 斯高帕斯(Scopus)

摘要

In this paper, we introduce a metalens with a hybrid unit-cell arrangement that operates at a wavelength of 0.94 μm. The metalens consists of 0.8 μm unit-cells on the inner and 0.4 μm unit-cells on the outer. The transmittance of 0.8 μm and 0.4 μm unit-cells are about 0.5 and 1, respectively. Therefore, the proposed metalens with hybrid unit-cells, behaving like a synthetic aperture lens, suppresses the low spatial frequency signal and enhances the high spatial frequency one. As a result, the proposed metalens with hybrid unit-cells presents a higher spatial resolution than that with an identical unit-cell size and holds higher transmittance than that of a conventional synthetic aperture lens. Moreover, we comprehensively discuss the optical performance and limitations of pixelate metalens and expand the application prospects of synthetic aperture metalenses in optical imaging.

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文章編號107982
期刊Materials Science in Semiconductor Processing
170
DOIs
出版狀態已出版 - 2月 2024

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