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arXiv · 1407.6088

Photonic spin Hall effect in metasurfaces with rotational symmetry-breaking

Yachao Liu·Xiaohui Ling·Xunong Yi·Xinxing Zhou·Shizhen Chen·Yougang Ke·Hailu Luo·Shuangchun Wen
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Abstract

Observation of photonic spin Hall effect (SHE) in dielectric-based metasurfaces with rotational symmetry breaking is presented. We find that the spin-dependent splitting is a unique angular splitting in the real position space, and is attributed to the space-variant Pancharatnam-Berry phase (PB). Breaking the rotational symmetry of the PB phase by misalignment of the central axes of the incident beam and the metasurface, the spin-dependent shift is observable. We show that the spin-dependent shift can be enhanced by increasing the rotation rate of the metasurface, so the metasurface provides a great flexibility in the manipulation of photonic SHE.

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Yachao Liu, Xiaohui Ling, Xunong Yi, Xinxing Zhou, Shizhen Chen, Yougang Ke, Hailu Luo, Shuangchun Wen. 2014-08-04. Photonic spin Hall effect in metasurfaces with rotational symmetry-breaking. https://doi.org/10.1364/ol.40.000756

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