13 November 2014 Manipulation of photonic spin Hall effect with space-variant Pancharatnam-Berry phase
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Observation of photonic spin Hall effect (SHE) manifested by spin-dependent splitting of light in a dielectric-based birefringent metasurface is reported experimentally. By designing the metasurface with homogeneous phase retardation but space-variant optical axis directions, we govern the photonic SHE via space-variant Pancharatnam-Berry phase originated from the local polarization manipulation of the metasurface, essentially, the spin-orbit interaction between the light and the metasurface. Modulating the polarization distribution of the incident light and/or the structure geometry of the metasurface, the photonic SHE could be tunable. This type of metasurface offers an effective way to manipulate the spin-polarized photons and a route for spin-controlled nanophotonic applications.
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Xiaohui Ling, Xiaohui Ling, Xunong Yi, Xunong Yi, Zhaoming Luo, Zhaoming Luo, Yachao Liu, Yachao Liu, Hailu Luo, Hailu Luo, Shuangchun Wen, Shuangchun Wen, "Manipulation of photonic spin Hall effect with space-variant Pancharatnam-Berry phase", Proc. SPIE 9277, Nanophotonics and Micro/Nano Optics II, 92770P (13 November 2014); doi: 10.1117/12.2064262; https://doi.org/10.1117/12.2064262

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