Giant photonic spin Hall effect near the Dirac points
| Autor: | Xu, Wenhao, Yang, Qiang, Ye, Guangzhou, Wu, Weijie, Zhang, Wenshuai, Luo, Hailu, Wen, Shuangchun |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Phys. Rev. A 101, 023826 (2020) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.101.023826 |
| Popis: | The origin of spin-orbit interaction of light at a conventional optical interface lies in the transverse nature of the photon polarization: The polarizations associated with the plane-wave components experience slightly different rotations in order to satisfy the transversality after reflection or refraction. Recent advances in topological photonic materials provide crucial opportunities to reexamine the spin-orbit interaction of light at the unique optical interface. Here, we establish a general model to describe the spin-orbit interaction of light in the photonic Dirac metacrystal. We find a giant photonic spin Hall effect near the Dirac points when a Gaussian beam impinges at the interface of the photonic Dirac metacrystal. The giant photonic spin Hall effect is attribute to the strong spin-orbit interaction of light, which manifests itself as the large polarization rotations of different plane-wave components. We believe that these results may provide insight into the fundamental properties of the spin-orbit interaction of light in the topological photonic systems. Comment: 7 pages, 5 figures |
| Databáze: | arXiv |
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