Chiral Dichroism in Resonant Metasurfaces with Monoclinic Lattices
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866912128297861120 |
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| author | Toftul, Ivan Tonkaev, Pavel Koshelev, Kirill Lai, Fangxing Song, Qinghai Gorkunov, Maxim Kivshar, Yuri |
| author_facet | Toftul, Ivan Tonkaev, Pavel Koshelev, Kirill Lai, Fangxing Song, Qinghai Gorkunov, Maxim Kivshar, Yuri |
| contents | We demonstrate that chiral response can be achieved in resonant metasurfaces with a monoclinic lattice symmetry (the so-called Bravais oblique lattices) where the mirror symmetry is broken by the lattice asymmetry and also by a substrate, whereas each individual meta-atom remains fully achiral. We describe the underlying physics by introducing a mode chirality parameter as a quantitative measure of the lattice chiral eigenmodes. We confirm experimentally selective linear and nonlinear chiral interaction of resonant silicon metasurfaces with circularly polarized light. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2406_11300 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Chiral Dichroism in Resonant Metasurfaces with Monoclinic Lattices Toftul, Ivan Tonkaev, Pavel Koshelev, Kirill Lai, Fangxing Song, Qinghai Gorkunov, Maxim Kivshar, Yuri Optics Mesoscale and Nanoscale Physics We demonstrate that chiral response can be achieved in resonant metasurfaces with a monoclinic lattice symmetry (the so-called Bravais oblique lattices) where the mirror symmetry is broken by the lattice asymmetry and also by a substrate, whereas each individual meta-atom remains fully achiral. We describe the underlying physics by introducing a mode chirality parameter as a quantitative measure of the lattice chiral eigenmodes. We confirm experimentally selective linear and nonlinear chiral interaction of resonant silicon metasurfaces with circularly polarized light. |
| title | Chiral Dichroism in Resonant Metasurfaces with Monoclinic Lattices |
| topic | Optics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2406.11300 |