基于环形磁偶极模式的中空米氏谐振器可提高折射传感的灵敏度

IF 2.3 4区物理与天体物理 Q3 PHYSICS, APPLIED

Applied Physics Express Pub Date : 2023-12-28 DOI:10.35848/1882-0786/ad197e

Rongyang Xu, Junichi Takahara

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引用次数: 0

摘要

我们提出了一种基于环形磁偶极模式空心硅米氏谐振器的折射传感器。该模式具有一对垂直于硅基板的反平行电偶极子；因此，该模式的辐射受到抑制，从而产生了 0.35 nm 的超窄反射峰线宽。此外，中空结构增强了增强电场与周围介质之间的相互作用，从而提高了灵敏度。所提出的米氏谐振器的灵敏度达到 486 nm/RIU，优点系数高达 1389 RIU-1，是折射传感的理想选择。

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Hollow Mie resonators based on toroidal magnetic dipole mode with enhanced sensitivity in refractometric sensing

We propose a refractometric sensor based on hollow silicon Mie resonators of a toroidal magnetic dipole mode. This mode has a pair of antiparallel electric dipoles perpendicular to the silica substrate; thus, the radiation of the mode is suppressed, resulting in an ultra-narrow reflection peak linewidth of 0.35 nm. In addition, the hollow structure enhances the interaction between the enhanced electric field and the surrounding medium, thus improving the sensitivity. The proposed Mie resonators achieve a sensitivity of 486 nm/RIU and a figure of merit up to 1389 RIU−1, which are ideal for refractometric sensing.

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来源期刊

Applied Physics Express 物理-物理：应用

CiteScore

4.80

自引率

8.70%

发文量

310

审稿时长

1.2 months

期刊介绍： Applied Physics Express (APEX) is a letters journal devoted solely to rapid dissemination of up-to-date and concise reports on new findings in applied physics. The motto of APEX is high scientific quality and prompt publication. APEX is a sister journal of the Japanese Journal of Applied Physics (JJAP) and is published by IOP Publishing Ltd on behalf of the Japan Society of Applied Physics (JSAP).