中国科学院长春光学精密机械与物理研究所

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	Polarization-insensitive dual-band response governed by quasi bound states in the continuum for high-performance refractive index sensing
	W. J. Liu; Z. Z. Liang; Z. Qin; X. Y. Shi; F. M. Yang and D. J. Meng
	2022
发表期刊	Results in Physics
ISSN	2211-3797
卷号	32页码:7
摘要	The introduction of distortions into the metasurfaces with in-plane symmetry offers a possibility to achieve resonances with high quality (Q) factors, but such distortions make the metasurfaces sensitive to the polarization state of the incident light. Here, we propose and numerically demonstrate a polarization-insensitive dual-band refractive index (RI) sensor. In this work, the proposed metasurface is imparted with fourfold symmetry by combining two pairs of asymmetric silicon elliptical nanodisks, allowing it to acquire polarization-insensitive properties to the incident light. Two narrow-band reflection peaks with full width at half maximum (FWHM) of 3.36 nm and 4.53 nm are excited and tailored for RI sensing. Their sensitivities are 2756.67 nm/RIU and 2319.93 nm/RIU, with figure of merit (FOM) values of 820.44 RIU-1 and 532.09 RIU-1. This work provides a new approach to realize polarization-independent and high-performance RI sensor devices.
DOI	10.1016/j.rinp.2021.105125
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收录类别	sci
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/66994
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	W. J. Liu,Z. Z. Liang,Z. Qin,et al. Polarization-insensitive dual-band response governed by quasi bound states in the continuum for high-performance refractive index sensing[J]. Results in Physics,2022,32:7.
APA	W. J. Liu,Z. Z. Liang,Z. Qin,X. Y. Shi,&F. M. Yang and D. J. Meng.(2022).Polarization-insensitive dual-band response governed by quasi bound states in the continuum for high-performance refractive index sensing.Results in Physics,32,7.
MLA	W. J. Liu,et al."Polarization-insensitive dual-band response governed by quasi bound states in the continuum for high-performance refractive index sensing".Results in Physics 32(2022):7.

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