Tailoring Polarization Conversion in Achiral All-Dielectric Metasurfaces by Using Quasi-Bound States in the Continuum
Quasi-bound states in the continuum (quasi-BICs) supported in all-dielectric metasurfaces (MTS) are known for their confinement in real space and the notably high values of the quality factor Q. Recently, the properties of quasi-BICs have been employed to achieve polarization conversion with all-die...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/13/2252 |
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| author | Jose Luis Pura Ruhinda Kabonire Diego R. Abujetas José A. Sánchez-Gil |
| author_facet | Jose Luis Pura Ruhinda Kabonire Diego R. Abujetas José A. Sánchez-Gil |
| author_sort | Jose Luis Pura |
| collection | DOAJ |
| description | Quasi-bound states in the continuum (quasi-BICs) supported in all-dielectric metasurfaces (MTS) are known for their confinement in real space and the notably high values of the quality factor Q. Recently, the properties of quasi-BICs have been employed to achieve polarization conversion with all-dielectric MTS. However, one of the main disadvantages of the current approaches is the dependence on the chirality of either the meta-atoms or their disposition. We present the possibility of achieving polarization conversion by using all-dielectric MTS with square and rectangular lattices of nano-disks. The precise tuning of the lattice and disks parameters allows to transform linearly polarized light into circularly polarized light with near unity polarization rates while maintaining the high Q values of quasi-BICs. Moreover, by using double accidental BICs it is possible to obtain right and left circularly polarized light on demand just by varying the angle of incidence. |
| first_indexed | 2024-03-09T03:59:05Z |
| format | Article |
| id | doaj.art-0379bc1c04584da7ad660da1f19c680d |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T03:59:05Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-0379bc1c04584da7ad660da1f19c680d2023-12-03T14:15:12ZengMDPI AGNanomaterials2079-49912022-06-011213225210.3390/nano12132252Tailoring Polarization Conversion in Achiral All-Dielectric Metasurfaces by Using Quasi-Bound States in the ContinuumJose Luis Pura0Ruhinda Kabonire1Diego R. Abujetas2José A. Sánchez-Gil3Instituto de Estructura de la Materia (IEM-CSIC), Consejo Superior de Investigaciones Científicas, Serrano 121, 28006 Madrid, SpainInstituto de Estructura de la Materia (IEM-CSIC), Consejo Superior de Investigaciones Científicas, Serrano 121, 28006 Madrid, SpainInstituto de Estructura de la Materia (IEM-CSIC), Consejo Superior de Investigaciones Científicas, Serrano 121, 28006 Madrid, SpainInstituto de Estructura de la Materia (IEM-CSIC), Consejo Superior de Investigaciones Científicas, Serrano 121, 28006 Madrid, SpainQuasi-bound states in the continuum (quasi-BICs) supported in all-dielectric metasurfaces (MTS) are known for their confinement in real space and the notably high values of the quality factor Q. Recently, the properties of quasi-BICs have been employed to achieve polarization conversion with all-dielectric MTS. However, one of the main disadvantages of the current approaches is the dependence on the chirality of either the meta-atoms or their disposition. We present the possibility of achieving polarization conversion by using all-dielectric MTS with square and rectangular lattices of nano-disks. The precise tuning of the lattice and disks parameters allows to transform linearly polarized light into circularly polarized light with near unity polarization rates while maintaining the high Q values of quasi-BICs. Moreover, by using double accidental BICs it is possible to obtain right and left circularly polarized light on demand just by varying the angle of incidence.https://www.mdpi.com/2079-4991/12/13/2252all-dielectric metasurfacesbound states in the continuumresonancescoupled-dipole theoriespolarization conversion |
| spellingShingle | Jose Luis Pura Ruhinda Kabonire Diego R. Abujetas José A. Sánchez-Gil Tailoring Polarization Conversion in Achiral All-Dielectric Metasurfaces by Using Quasi-Bound States in the Continuum Nanomaterials all-dielectric metasurfaces bound states in the continuum resonances coupled-dipole theories polarization conversion |
| title | Tailoring Polarization Conversion in Achiral All-Dielectric Metasurfaces by Using Quasi-Bound States in the Continuum |
| title_full | Tailoring Polarization Conversion in Achiral All-Dielectric Metasurfaces by Using Quasi-Bound States in the Continuum |
| title_fullStr | Tailoring Polarization Conversion in Achiral All-Dielectric Metasurfaces by Using Quasi-Bound States in the Continuum |
| title_full_unstemmed | Tailoring Polarization Conversion in Achiral All-Dielectric Metasurfaces by Using Quasi-Bound States in the Continuum |
| title_short | Tailoring Polarization Conversion in Achiral All-Dielectric Metasurfaces by Using Quasi-Bound States in the Continuum |
| title_sort | tailoring polarization conversion in achiral all dielectric metasurfaces by using quasi bound states in the continuum |
| topic | all-dielectric metasurfaces bound states in the continuum resonances coupled-dipole theories polarization conversion |
| url | https://www.mdpi.com/2079-4991/12/13/2252 |
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