Optimizing the optical and magneto-optical response of all-dielectric metasurfaces with tilted side walls

doi:10.1364/OE.480415

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	Optimizing the optical and magneto-optical response of all-dielectric metasurfaces with tilted side walls
	S. Gao; Y. Ota; F. Tian; T. Liu and S. Iwamoto
	2023
发表期刊	Optics Express
ISSN	10944087
卷号	31 期号:9 页码:13672-13682
摘要	All-dielectric metasurfaces based on ferrimagnetic iron garnets are a promising platform for realizing ultra-compact magneto-optical (MO) devices with low loss. However, ferrimagnetic iron garnets are notorious for being intractable on fine nanopatterning, hindering the faithful fabrication of designed nanostructures. In this regard, it is important to assess the influence of fabrication imperfections on the performance of MO metasurfaces. Here, we investigate the optical properties of a MO metasurface with structural imperfections. As the most typical fabrication error, we studied the impact of the tilted side walls of cylindrical garnet disks that constitute the metasurfaces. We found that tilting the side walls drastically degrades the MO response and light transmittance of the device. Nevertheless, it was also found that the performance can be recovered by optimizing the refractive index of the material covering the upper half of the nanodisks. © 2023 Optica Publishing Group.
DOI	10.1364/OE.480415
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收录类别	sci ; ei
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67475
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	S. Gao,Y. Ota,F. Tian,et al. Optimizing the optical and magneto-optical response of all-dielectric metasurfaces with tilted side walls[J]. Optics Express,2023,31(9):13672-13682.
APA	S. Gao,Y. Ota,F. Tian,&T. Liu and S. Iwamoto.(2023).Optimizing the optical and magneto-optical response of all-dielectric metasurfaces with tilted side walls.Optics Express,31(9),13672-13682.
MLA	S. Gao,et al."Optimizing the optical and magneto-optical response of all-dielectric metasurfaces with tilted side walls".Optics Express 31.9(2023):13672-13682.

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