Fano resonance in near-infrared metasurface based on asymmetric all-dielectric cylindroids

Hongyan Meng; Hengli Feng; Guan Wang; Yang Jia; Jia Liu; Xin Zhang; Shuang Yang; Yachen Gao

doi:10.1117/12.3039102

13 September 2024 Fano resonance in near-infrared metasurface based on asymmetric all-dielectric cylindroids

Hongyan Meng, Hengli Feng, Guan Wang, Yang Jia, Jia Liu, Xin Zhang, Shuang Yang, Yachen Gao

Proceedings Volume 13254, Fourth International Conference on Optics and Image Processing (ICOIP 2024); 132540V (2024) https://doi.org/10.1117/12.3039102
Event: Fourth International Conference on Optics and Image Processing (ICOIP 2024), 2024, Chongqing, China

Abstract

Recent research in all-dielectric asymmetric metasurfaces has demonstrated the capability to generate highly sharp Fano resonances, offering bright prospects for applications in optical biosensing. This work proposed a Fano Resonance in Near-Infrared Metasurface based on Asymmetric All-Dielectric Cylindroids. Each unit of the metasurface consists of two all-dielectric Si elliptical cylinders with different short-axis lengths arranged on top of an MgF₂ dielectric layer. By employing the Finite-Difference Time-Domain (FDTD) numerical analysis method, we investigate the optical characteristics of the metasurface. We found that when the semi-minor axis of the asymmetric cylindroids are 0.1μm(w₁) and 0.094μm(w₂), the metasurface exhibits a sharply narrow Fano resonance peak at λ=1.013μm, with a reflection intensity exceeding 92% and a Q-factor as high as 580. Which works at near-infrared region. The physical mechanism of the metasurface is the principle of electromagnetic coupling. The simulation results indicate that the Fano resonance arises from the interference of two distinct electric quadrupole modes. Moreover, the results demonstrate that the sensor exhibits a sensitivity of up to 85 nm/RIU, thereby validating its potential applications in areas such as biosensing and refractive index sensing.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Hongyan Meng, Hengli Feng, Guan Wang, Yang Jia, Jia Liu, Xin Zhang, Shuang Yang, and Yachen Gao "Fano resonance in near-infrared metasurface based on asymmetric all-dielectric cylindroids", Proc. SPIE 13254, Fourth International Conference on Optics and Image Processing (ICOIP 2024), 132540V (13 September 2024); https://doi.org/10.1117/12.3039102

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Reflection

Refractive index

Sensors

Biosensing

Electric fields

Silicon

Francium

Show All Keywords

Keywords/Phrases

Search In:

Publication Years