Spin-momentum locked modes on anti-phase boundaries in photonic crystals
Fuente:
arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2019
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866911244331515904 |
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| author | Kong, Xianghong Zhou, Yun Xiao, Gaobiao Sievenpiper, Daniel F. |
| author_facet | Kong, Xianghong Zhou, Yun Xiao, Gaobiao Sievenpiper, Daniel F. |
| contents | An anti-phase boundary is formed by shifting a portion of photonic crystal lattice along the direction of periodicity. A spinning magnetic dipole is applied to excite edge modes on the anti-phase boundary. We show the unidirectional propagation of the edge modes which is also known as spin-momentum locking. Band inversion of the edge modes is discovered when we sweep the geometrical parameters, which leads to a change in the propagation direction. Also, an optimized source is applied to excite the unidirectional edge mode with high directivity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1905_08822 |
| institution | arXiv |
| publishDate | 2019 |
| record_format | arxiv |
| spellingShingle | Spin-momentum locked modes on anti-phase boundaries in photonic crystals Kong, Xianghong Zhou, Yun Xiao, Gaobiao Sievenpiper, Daniel F. Optics An anti-phase boundary is formed by shifting a portion of photonic crystal lattice along the direction of periodicity. A spinning magnetic dipole is applied to excite edge modes on the anti-phase boundary. We show the unidirectional propagation of the edge modes which is also known as spin-momentum locking. Band inversion of the edge modes is discovered when we sweep the geometrical parameters, which leads to a change in the propagation direction. Also, an optimized source is applied to excite the unidirectional edge mode with high directivity. |
| title | Spin-momentum locked modes on anti-phase boundaries in photonic crystals |
| topic | Optics |
| url | https://arxiv.org/abs/1905.08822 |