Fabricable concentric-ring metalens with high focusing efficiency based on two-dimensional subwavelength unit splicing
文献类型：期刊论文
| 作者 | C. Wang, L. I. N. Yu, H. A. N. Yeming, W. E. I. Yupei, B. Wang, J. I. N. Zhao and Y. Deng |
| 刊名 | Optics Express
 |
| 出版日期 | 2023 |
| 卷号 | 31期号:20页码:33596-33607 |
| ISSN号 | 10944087 |
| DOI | 10.1364/OE.500688 |
| 英文摘要 | To address the challenges posed by computational resource consumption and data volume in the development of large-aperture metalenses, a design method for concentric-ring metalens based on two-dimensional unit splicing is proposed in this paper. In the method, the unit structure library is constructed through global traversal under the machining process constraints. The phase matching is performed for two polarization states with specific weights and the design of binary-height, concentric-ring structures with arbitrary polarization sensitivity is realized, whose focusing efficiency (the encircled power within 3×FWHM of the focal spot divided by the near-field outgoing power) is up to 90%. Based on this method, a polarization-insensitive metalens with a design wavelength of 10µm, diameter of 2 cm, and numerical aperture of 0.447 is obtained. The method combines the advantages of lower computation requirements for a building block array of a metalens and lower structure data for a concentric-ring metalens. Consequently, it becomes possible to reduce calculation and processing costs by several orders of magnitude during the development process of metalenses with diameters ranging from 103 to 105 wavelengths. The resulting focusing efficiency can approach the upper limit achievable through global structural optimization and significantly surpass that of binary-height Fresnel lenses. © 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement. |
| URL标识 | 查看原文 |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/67913]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | C. Wang, L. I. N. Yu, H. A. N. Yeming, W. E. I. Yupei, B. Wang, J. I. N. Zhao and Y. Deng. Fabricable concentric-ring metalens with high focusing efficiency based on two-dimensional subwavelength unit splicing[J]. Optics Express,2023,31(20):33596-33607. |
| APA | C. Wang, L. I. N. Yu, H. A. N. Yeming, W. E. I. Yupei, B. Wang, J. I. N. Zhao and Y. Deng.(2023).Fabricable concentric-ring metalens with high focusing efficiency based on two-dimensional subwavelength unit splicing.Optics Express,31(20),33596-33607. |
| MLA | C. Wang, L. I. N. Yu, H. A. N. Yeming, W. E. I. Yupei, B. Wang, J. I. N. Zhao and Y. Deng."Fabricable concentric-ring metalens with high focusing efficiency based on two-dimensional subwavelength unit splicing".Optics Express 31.20(2023):33596-33607. |
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