Open Access System for Information Sharing

Login Library

 

Article
Cited 2 time in webofscience Cited 4 time in scopus
Metadata Downloads

Quasi-Trapped Guided Mode in a Metasurface Waveguide for Independent Control of Multiple Nonlocal Modes SCIE SCOPUS

Title
Quasi-Trapped Guided Mode in a Metasurface Waveguide for Independent Control of Multiple Nonlocal Modes
Authors
Jeon, DongminRHO, JUNSUK
Date Issued
2024-01
Publisher
American Chemical Society
Abstract
Most of the nanophotonic devices such as metasurfaces control light by coupling external waves to the eigenmodes of the nanostructure. Notably, nonlocal modes have garnered considerable attention owing to their exceptional high-quality factor characteristics. Specifically, employing multiple nonlocal modes provides the unique benefit of broadening the detection range for a variety of sensing applications. However, the simultaneous alteration of these modes by altering the geometric parameters impedes the ability to execute distinct functions across each spectrum. Thus, the necessity of disentangling the interdependence of these modes and regulating them individually is underscored. In this work, we demonstrated the independent regulation of multiple nonlocal modes by introducing an eigenmode termed a quasi-trapped guided mode (QTGM). We explore the characteristics of the QTGM within an integrated structure of a metasurface manifesting a quasi-trapped mode (QTM) and a waveguide capable of exhibiting a leaky guided mode (LGM). QTGM inherits the characteristics of both QTM and LGM, rendering it especially responsive to variations in the in-plane symmetry of the metasurface notwithstanding its confinement within the waveguide slab. Conversely, LGM is confined within the waveguide slab and remains unresponsive to such perturbations, thereby enabling the exclusive alteration of QTGM. Additionally, we demonstrated that this methodology permits the tuning of the Rabi-splitting and quality factor of Friedrich-Wintgen bound states in the continuum. The proposed approach offers significant potential for a wide array of applications that leverage multiple nonlocal modes, including biomolecular sensing, multispectral filtering, and multiphoton nonlinear processes.
URI
https://oasis.postech.ac.kr/handle/2014.oak/120535
DOI
10.1021/acsphotonics.3c01577
ISSN
2330-4022
Article Type
Article
Citation
ACS Photonics, vol. 11, no. 2, page. 703 - 713, 2024-01
Files in This Item:
There are no files associated with this item.

qr_code

  • mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher

노준석RHO, JUNSUK
Dept of Mechanical Enginrg
Read more

Views & Downloads

Browse