Tunable ultraslow light in all-dielectric metasurfaces via the interplay of dual quasi-bound states in the continuum

Zhendong Lu; Yan Li; Yuexuan Liang; Xiao-Qing Luo

doi:10.1117/12.3034191

5 July 2024 Tunable ultraslow light in all-dielectric metasurfaces via the interplay of dual quasi-bound states in the continuum

Zhendong Lu, Yan Li, Yuexuan Liang, Xiao-Qing Luo

Author Affiliations +

Proceedings Volume 13183, International Conference on Optoelectronic Information and Functional Materials (OIFM 2024); 131831A (2024) https://doi.org/10.1117/12.3034191
Event: The 3rd International Conference on Optoelectronic Information and Functional Materials (OIFM 2024), 2024, Wuhan, China

Abstract

The quasi-bound states in the continuum (BIC) in optical metasurfaces have recently emerged as a promising approach for enriching light-matter interactions at the nanoscale due to their ultrahigh quality factors, showcasing the potential of advancing high-harmonic generation, low-threshold nanolasers, and slow light devices. However, the interplay of the quasi-BICs modes empowered slow light in the near-infrared regions has not been fully explored. Herein, we show that the interplay of the dual symmetry-protected quasi-BICs modes can be exploited for the fulfillment of tunable ultraslow light in all-dielectric metasurfaces that consist of triple parallel silicon rectangular nanorods unit cells. In particular, by adjusting the related structural parameters of the nanorod, the dual symmetry-protected quasi-BICs dominated by the magnetic dipoles can not only be achieved with high-quality factors but the interplay of them can be adopted to realize analogue of electromagnetically induced transparency, leading to the presence of ultraslow light effect (~10^-4c) associated with modulation depth being 19.5 dB. Our results can open a new avenue to explore quasi-BIC-based metadevices and hold great promise for sensors and filters.

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

Citation Download Citation

Zhendong Lu, Yan Li, Yuexuan Liang, and Xiao-Qing Luo "Tunable ultraslow light in all-dielectric metasurfaces via the interplay of dual quasi-bound states in the continuum", Proc. SPIE 13183, International Conference on Optoelectronic Information and Functional Materials (OIFM 2024), 131831A (5 July 2024); https://doi.org/10.1117/12.3034191

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

Nanorods

Polarization

Silicon

Incident light

Modulation

Electromagnetism

Magnetism

Show All Keywords

Keywords/Phrases

Search In:

Publication Years