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arXiv · 1807.03689

Photonic spin Hall effect in hyperbolic metamaterials at visible

Osamu Takayama·Johneph Sukham·Radu Malureanu·Andrei V. Lavrinenko·Graciana Puentes
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Abstract

Photonic spin Hall effect in transmission is a transverse beam shift of the out-coming beam depending on polarization of the in-coming beam. The effect can be significantly enhanced by materials with high anisotropy. We report the first experimental demonstration of the photonic spin Hall effect in a multilayer hyperbolic metamaterial at visible wavelengths (wavelengths of 520 nm and 633 nm). The metamaterial is composed of alternating layers of gold and alumina with deeply-subwavelength thicknesses, exhibiting extremely large anisotropy. The angle resolved polarimetric measurements showed the shift of 165 $μm$ for the metamaterial of 176 nm in thickness. Additionally the transverse beam shift is extremely sensitive to the variations of the incident angle changing theoretically by 270 $μm$ with one milli-radian ($0.057^\circ$). These features can lead to minituarized spin Hall switches and filters with high angular resolution.

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Osamu Takayama, Johneph Sukham, Radu Malureanu, Andrei V. Lavrinenko, Graciana Puentes. 2018-07-10. Photonic spin Hall effect in hyperbolic metamaterials at visible. https://doi.org/10.1364/ol.43.004602

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