Second harmonic generation from bound-state in the continuum-hosted few-layers van der Waals metasurface
Monolayer transition metals dichalcogenides (TMDs) have been coupled to bound-state in the continuum (BIC) hosted dielectric structures to attain high second harmonic generation (SHG). However, the transvers electric modes are strongly localized in the waveguides result in fairly weak exciton-photon...
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| Format: | Article |
| Language: | English |
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De Gruyter
2025-01-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2024-0630 |
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| author | Muhammad Naseer Begum Azra Su Zhaoxian Huang Lingling |
| author_facet | Muhammad Naseer Begum Azra Su Zhaoxian Huang Lingling |
| author_sort | Muhammad Naseer |
| collection | DOAJ |
| description | Monolayer transition metals dichalcogenides (TMDs) have been coupled to bound-state in the continuum (BIC) hosted dielectric structures to attain high second harmonic generation (SHG). However, the transvers electric modes are strongly localized in the waveguides result in fairly weak exciton-photon coupling in monolayer TMD placed on the surface. To achieve SHG in few-layers TMDs based BIC-inspired structure is a challenge. Here, we report BIC in few-layers TMDs metasurface with high quality factor (Q-factor), tunability, and modes-upholding in different environments. The metasurface sustains BIC at different thickness of the meta-atoms, which is highly desired for maintaining the accuracy in fabrications. Next, we calculate the SHG efficiency from few-layers TMD metasurface around BIC wavelengths. The high conversion efficiency in this work is 1.47 × 10−4 for 6 mW incident power. Moreover, our design is highly thin and can be used for various linear and non-linear applications in optics. This study will provide a new route to next generation post-silicon metasurfaces. |
| format | Article |
| id | doaj-art-58671b07cddc4b18ab8c52519bca4190 |
| institution | Kabale University |
| issn | 2192-8614 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-58671b07cddc4b18ab8c52519bca41902025-02-10T13:24:47ZengDe GruyterNanophotonics2192-86142025-01-0114226327010.1515/nanoph-2024-0630Second harmonic generation from bound-state in the continuum-hosted few-layers van der Waals metasurfaceMuhammad Naseer0Begum Azra1Su Zhaoxian2Huang Lingling3School of Optics and Photonics, Beijing Engineering Research Center of Mixed Reality and Advanced Display, 47833Beijing Institute of Technology, Beijing100081, ChinaSchool of Optics and Photonics, Beijing Engineering Research Center of Mixed Reality and Advanced Display, 47833Beijing Institute of Technology, Beijing100081, ChinaSchool of Optics and Photonics, Beijing Engineering Research Center of Mixed Reality and Advanced Display, 47833Beijing Institute of Technology, Beijing100081, ChinaSchool of Optics and Photonics, Beijing Engineering Research Center of Mixed Reality and Advanced Display, 47833Beijing Institute of Technology, Beijing100081, ChinaMonolayer transition metals dichalcogenides (TMDs) have been coupled to bound-state in the continuum (BIC) hosted dielectric structures to attain high second harmonic generation (SHG). However, the transvers electric modes are strongly localized in the waveguides result in fairly weak exciton-photon coupling in monolayer TMD placed on the surface. To achieve SHG in few-layers TMDs based BIC-inspired structure is a challenge. Here, we report BIC in few-layers TMDs metasurface with high quality factor (Q-factor), tunability, and modes-upholding in different environments. The metasurface sustains BIC at different thickness of the meta-atoms, which is highly desired for maintaining the accuracy in fabrications. Next, we calculate the SHG efficiency from few-layers TMD metasurface around BIC wavelengths. The high conversion efficiency in this work is 1.47 × 10−4 for 6 mW incident power. Moreover, our design is highly thin and can be used for various linear and non-linear applications in optics. This study will provide a new route to next generation post-silicon metasurfaces.https://doi.org/10.1515/nanoph-2024-0630transition metals dichalcogenides (tmds)metasurfacesecond harmonic generationhigh-qbound-states in the continuum |
| spellingShingle | Muhammad Naseer Begum Azra Su Zhaoxian Huang Lingling Second harmonic generation from bound-state in the continuum-hosted few-layers van der Waals metasurface Nanophotonics transition metals dichalcogenides (tmds) metasurface second harmonic generation high-q bound-states in the continuum |
| title | Second harmonic generation from bound-state in the continuum-hosted few-layers van der Waals metasurface |
| title_full | Second harmonic generation from bound-state in the continuum-hosted few-layers van der Waals metasurface |
| title_fullStr | Second harmonic generation from bound-state in the continuum-hosted few-layers van der Waals metasurface |
| title_full_unstemmed | Second harmonic generation from bound-state in the continuum-hosted few-layers van der Waals metasurface |
| title_short | Second harmonic generation from bound-state in the continuum-hosted few-layers van der Waals metasurface |
| title_sort | second harmonic generation from bound state in the continuum hosted few layers van der waals metasurface |
| topic | transition metals dichalcogenides (tmds) metasurface second harmonic generation high-q bound-states in the continuum |
| url | https://doi.org/10.1515/nanoph-2024-0630 |
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