Si metasurface supporting multiple quasi-BICs for degenerate four-wave mixing

Dielectric metasurfaces supporting quasi-bound states in the continuum (qBICs) enable high field enhancement with narrow-linewidth resonances in the visible and near-infrared ranges. The resonance emerges when distorting the meta-atom’s geometry away from a symmetry-protected BIC condition and, usua...

Full description

Saved in:
Bibliographic Details
Main Authors: Moretti Gianni Q., Weber Thomas, Possmayer Thomas, Cortés Emiliano, Menezes Leonardo de S., Bragas Andrea V., Maier Stefan A., Tittl Andreas, Grinblat Gustavo
Format: Article
Language:English
Published: De Gruyter 2024-06-01
Series:Nanophotonics
Subjects:
Online Access:https://doi.org/10.1515/nanoph-2024-0128
Tags: Add Tag
No Tags, Be the first to tag this record!
_version_ 1850063789964132352
author Moretti Gianni Q.
Weber Thomas
Possmayer Thomas
Cortés Emiliano
Menezes Leonardo de S.
Bragas Andrea V.
Maier Stefan A.
Tittl Andreas
Grinblat Gustavo
author_facet Moretti Gianni Q.
Weber Thomas
Possmayer Thomas
Cortés Emiliano
Menezes Leonardo de S.
Bragas Andrea V.
Maier Stefan A.
Tittl Andreas
Grinblat Gustavo
author_sort Moretti Gianni Q.
collection DOAJ
description Dielectric metasurfaces supporting quasi-bound states in the continuum (qBICs) enable high field enhancement with narrow-linewidth resonances in the visible and near-infrared ranges. The resonance emerges when distorting the meta-atom’s geometry away from a symmetry-protected BIC condition and, usually, a given design can sustain one or two of these states. In this work, we introduce a silicon-on-silica metasurface that simultaneously supports up to four qBIC resonances in the near-infrared region. This is achieved by combining multiple symmetry-breaking distortions on an elliptical cylinder array. By pumping two of these resonances, the nonlinear process of degenerate four-wave mixing is experimentally realized. By comparing the nonlinear response with that of an unpatterned silicon film, the near-field enhancement inside the nanostructured dielectric is revealed. The presented results demonstrate independent geometric control of multiple qBICs and their interaction through wave mixing processes, opening new research pathways in nanophotonics, with potential applications in information multiplexing, multi-wavelength sensing and nonlinear imaging.
format Article
id doaj-art-2530bc2bbf474b3b99082309eed4e5c6
institution DOAJ
issn 2192-8614
language English
publishDate 2024-06-01
publisher De Gruyter
record_format Article
series Nanophotonics
spelling doaj-art-2530bc2bbf474b3b99082309eed4e5c62025-08-20T02:49:30ZengDe GruyterNanophotonics2192-86142024-06-0113183421342810.1515/nanoph-2024-0128Si metasurface supporting multiple quasi-BICs for degenerate four-wave mixingMoretti Gianni Q.0Weber Thomas1Possmayer Thomas2Cortés Emiliano3Menezes Leonardo de S.4Bragas Andrea V.5Maier Stefan A.6Tittl Andreas7Grinblat Gustavo8Facultad de Ciencias Exactas y Naturales, Departamento de Física, 28196Universidad de Buenos Aires, 1428Buenos Aires, ArgentinaChair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, 9183Ludwig-Maximilians-Universität München, 80539München, GermanyChair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, 9183Ludwig-Maximilians-Universität München, 80539München, GermanyChair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, 9183Ludwig-Maximilians-Universität München, 80539München, GermanyChair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, 9183Ludwig-Maximilians-Universität München, 80539München, GermanyFacultad de Ciencias Exactas y Naturales, Departamento de Física, 28196Universidad de Buenos Aires, 1428Buenos Aires, ArgentinaSchool of Physics and Astronomy, Monash University, Clayton, Victoria3800, AustraliaChair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, 9183Ludwig-Maximilians-Universität München, 80539München, GermanyFacultad de Ciencias Exactas y Naturales, Departamento de Física, 28196Universidad de Buenos Aires, 1428Buenos Aires, ArgentinaDielectric metasurfaces supporting quasi-bound states in the continuum (qBICs) enable high field enhancement with narrow-linewidth resonances in the visible and near-infrared ranges. The resonance emerges when distorting the meta-atom’s geometry away from a symmetry-protected BIC condition and, usually, a given design can sustain one or two of these states. In this work, we introduce a silicon-on-silica metasurface that simultaneously supports up to four qBIC resonances in the near-infrared region. This is achieved by combining multiple symmetry-breaking distortions on an elliptical cylinder array. By pumping two of these resonances, the nonlinear process of degenerate four-wave mixing is experimentally realized. By comparing the nonlinear response with that of an unpatterned silicon film, the near-field enhancement inside the nanostructured dielectric is revealed. The presented results demonstrate independent geometric control of multiple qBICs and their interaction through wave mixing processes, opening new research pathways in nanophotonics, with potential applications in information multiplexing, multi-wavelength sensing and nonlinear imaging.https://doi.org/10.1515/nanoph-2024-0128nanophotonicsdielectric metasurfacesbound states in the continuumnonlinear flat-optics
spellingShingle Moretti Gianni Q.
Weber Thomas
Possmayer Thomas
Cortés Emiliano
Menezes Leonardo de S.
Bragas Andrea V.
Maier Stefan A.
Tittl Andreas
Grinblat Gustavo
Si metasurface supporting multiple quasi-BICs for degenerate four-wave mixing
Nanophotonics
nanophotonics
dielectric metasurfaces
bound states in the continuum
nonlinear flat-optics
title Si metasurface supporting multiple quasi-BICs for degenerate four-wave mixing
title_full Si metasurface supporting multiple quasi-BICs for degenerate four-wave mixing
title_fullStr Si metasurface supporting multiple quasi-BICs for degenerate four-wave mixing
title_full_unstemmed Si metasurface supporting multiple quasi-BICs for degenerate four-wave mixing
title_short Si metasurface supporting multiple quasi-BICs for degenerate four-wave mixing
title_sort si metasurface supporting multiple quasi bics for degenerate four wave mixing
topic nanophotonics
dielectric metasurfaces
bound states in the continuum
nonlinear flat-optics
url https://doi.org/10.1515/nanoph-2024-0128
work_keys_str_mv AT morettigianniq simetasurfacesupportingmultiplequasibicsfordegeneratefourwavemixing
AT weberthomas simetasurfacesupportingmultiplequasibicsfordegeneratefourwavemixing
AT possmayerthomas simetasurfacesupportingmultiplequasibicsfordegeneratefourwavemixing
AT cortesemiliano simetasurfacesupportingmultiplequasibicsfordegeneratefourwavemixing
AT menezesleonardodes simetasurfacesupportingmultiplequasibicsfordegeneratefourwavemixing
AT bragasandreav simetasurfacesupportingmultiplequasibicsfordegeneratefourwavemixing
AT maierstefana simetasurfacesupportingmultiplequasibicsfordegeneratefourwavemixing
AT tittlandreas simetasurfacesupportingmultiplequasibicsfordegeneratefourwavemixing
AT grinblatgustavo simetasurfacesupportingmultiplequasibicsfordegeneratefourwavemixing