Chirality enhancement using topology-designed 3D nanophotonic antennas
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arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866909111340236800 |
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| author | Taguchi, Atsushi Fukui, Yamato Sasaki, Keiji |
| author_facet | Taguchi, Atsushi Fukui, Yamato Sasaki, Keiji |
| contents | We explore chiroptical phenomena in 3D chiral nano-gap antennas using topology optimization. The characteristic helical geometries of the topology-designed antennas exhibit giant chiral dissymmetry (g=-1.70) considering the gap intensity, circular-to-linear polarization conversion, and circularly polarized light emission from a linear dipole coupled with the antenna. We observed that the spin angular momentum of light, flowing into the nanogap with opposite signs, locally amplifies optical chirality. These findings carry profound implications for the nanoscale control of complex light-matter interactions with structured light. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_10742 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Chirality enhancement using topology-designed 3D nanophotonic antennas Taguchi, Atsushi Fukui, Yamato Sasaki, Keiji Optics Applied Physics We explore chiroptical phenomena in 3D chiral nano-gap antennas using topology optimization. The characteristic helical geometries of the topology-designed antennas exhibit giant chiral dissymmetry (g=-1.70) considering the gap intensity, circular-to-linear polarization conversion, and circularly polarized light emission from a linear dipole coupled with the antenna. We observed that the spin angular momentum of light, flowing into the nanogap with opposite signs, locally amplifies optical chirality. These findings carry profound implications for the nanoscale control of complex light-matter interactions with structured light. |
| title | Chirality enhancement using topology-designed 3D nanophotonic antennas |
| topic | Optics Applied Physics |
| url | https://arxiv.org/abs/2402.10742 |