Highly Efficient and achromatic mid-infrared silicon nitride meta-lenses
Abstract Inverse design with topology optimization considers a promising methodology for discovering new optimized photonic structure that enables to break the limitations of the forward or the traditional design especially for the meta-structure. This work presents a high efficiency mid infra-red i...
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Nature Portfolio
2025-01-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-024-83728-2 |
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| author | Abdullah Maher Mohamed A. Swillam |
| author_facet | Abdullah Maher Mohamed A. Swillam |
| author_sort | Abdullah Maher |
| collection | DOAJ |
| description | Abstract Inverse design with topology optimization considers a promising methodology for discovering new optimized photonic structure that enables to break the limitations of the forward or the traditional design especially for the meta-structure. This work presents a high efficiency mid infra-red imaging photonics element along mid infra-red wavelengths band starts from 2 to 5 µm based on silicon nitride optimized material structures. The first two designs are broadband focusing and reflective meta-lens under very high numerical aperture condition (NA = 0.9). The two designs are modeled by inverse design with topology optimization problem with Kreisselmeier–Steinhauser (k–s) aggregation objective function, while the final design is depended on novel inverse design optimization problem with double aggregation objective function that can target bifocal points along the wavelength band producing high efficiency achromatic broadband multi-focal meta-lens under very high numerical apertures ( $$N{A}_{1} = 0.9, \, N{A}_{2}=0.88$$ ). |
| format | Article |
| id | doaj-art-9ad7b9a6210142de97ea3d977cee89bc |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-9ad7b9a6210142de97ea3d977cee89bc2025-01-19T12:21:22ZengNature PortfolioScientific Reports2045-23222025-01-0115111910.1038/s41598-024-83728-2Highly Efficient and achromatic mid-infrared silicon nitride meta-lensesAbdullah Maher0Mohamed A. Swillam1Department of Physics, The American University in CairoDepartment of Physics, The American University in CairoAbstract Inverse design with topology optimization considers a promising methodology for discovering new optimized photonic structure that enables to break the limitations of the forward or the traditional design especially for the meta-structure. This work presents a high efficiency mid infra-red imaging photonics element along mid infra-red wavelengths band starts from 2 to 5 µm based on silicon nitride optimized material structures. The first two designs are broadband focusing and reflective meta-lens under very high numerical aperture condition (NA = 0.9). The two designs are modeled by inverse design with topology optimization problem with Kreisselmeier–Steinhauser (k–s) aggregation objective function, while the final design is depended on novel inverse design optimization problem with double aggregation objective function that can target bifocal points along the wavelength band producing high efficiency achromatic broadband multi-focal meta-lens under very high numerical apertures ( $$N{A}_{1} = 0.9, \, N{A}_{2}=0.88$$ ).https://doi.org/10.1038/s41598-024-83728-2 |
| spellingShingle | Abdullah Maher Mohamed A. Swillam Highly Efficient and achromatic mid-infrared silicon nitride meta-lenses Scientific Reports |
| title | Highly Efficient and achromatic mid-infrared silicon nitride meta-lenses |
| title_full | Highly Efficient and achromatic mid-infrared silicon nitride meta-lenses |
| title_fullStr | Highly Efficient and achromatic mid-infrared silicon nitride meta-lenses |
| title_full_unstemmed | Highly Efficient and achromatic mid-infrared silicon nitride meta-lenses |
| title_short | Highly Efficient and achromatic mid-infrared silicon nitride meta-lenses |
| title_sort | highly efficient and achromatic mid infrared silicon nitride meta lenses |
| url | https://doi.org/10.1038/s41598-024-83728-2 |
| work_keys_str_mv | AT abdullahmaher highlyefficientandachromaticmidinfraredsiliconnitridemetalenses AT mohamedaswillam highlyefficientandachromaticmidinfraredsiliconnitridemetalenses |