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...
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| Format: | Article |
| Language: | English |
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De Gruyter
2024-06-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2024-0128 |
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| 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 |
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