Monoclinic nonlinear metasurfaces for resonant engineering of polarization states
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arXiv
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| Auteurs principaux: | , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866913763032039424 |
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| author | Toftul, Ivan Hariharan, Dhruv Tonkaev, Pavel Lai, Fangxing Song, Qinghai Kivshar, Yuri |
| author_facet | Toftul, Ivan Hariharan, Dhruv Tonkaev, Pavel Lai, Fangxing Song, Qinghai Kivshar, Yuri |
| contents | Polarization is a fundamental property of light that can be engineered and controlled efficiently with optical metasurfaces. Here, we employ chiral metasurfaces with monoclinic lattice geometry and achiral meta-atoms for resonant engineering of polarization states of light. We demonstrate, both theoretically and experimentally, that a monoclinic metasurface can convert linearly polarized light into elliptically polarized light not only in the linear regime but also in the nonlinear regime with the resonant generation of the third-harmonic field. We reveal that the ellipticity of the fundamental and higher-harmonic fields depends critically on the angle of the input linear polarization, and the effective chiral response of a monoclinic lattice plays a significant role in the polarization conversion. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_08494 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Monoclinic nonlinear metasurfaces for resonant engineering of polarization states Toftul, Ivan Hariharan, Dhruv Tonkaev, Pavel Lai, Fangxing Song, Qinghai Kivshar, Yuri Optics Polarization is a fundamental property of light that can be engineered and controlled efficiently with optical metasurfaces. Here, we employ chiral metasurfaces with monoclinic lattice geometry and achiral meta-atoms for resonant engineering of polarization states of light. We demonstrate, both theoretically and experimentally, that a monoclinic metasurface can convert linearly polarized light into elliptically polarized light not only in the linear regime but also in the nonlinear regime with the resonant generation of the third-harmonic field. We reveal that the ellipticity of the fundamental and higher-harmonic fields depends critically on the angle of the input linear polarization, and the effective chiral response of a monoclinic lattice plays a significant role in the polarization conversion. |
| title | Monoclinic nonlinear metasurfaces for resonant engineering of polarization states |
| topic | Optics |
| url | https://arxiv.org/abs/2501.08494 |