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Title: Enhanced broadband spin Hall effects by core-shell nanoparticles
Authors: Shi, R.
Wang, Y. Q.
Gao, L.
Gao, Dong Liang
Hu, Hao
Keywords: Metamaterials
Engineering::Electrical and electronic engineering
Issue Date: 2019
Source: Shi, R., Gao, D. L., Hu, H., Wang, Y. Q., & Gao, L. (2019). Enhanced broadband spin Hall effects by core-shell nanoparticles. Optics Express, 27(4), 4808-4817. doi:10.1364/OE.27.004808
Series/Report no.: Optics Express
Abstract: Spin-orbit interaction of light is ubiquitous in any optical system. However, the relevant spin Hall effects are usually weak for the light scattering from nanoparticles, making it challengeable to detect directly in experiment. In this paper, we demonstrate enhanced broadband spin Hall effects by using core-shell nanoparticles. The electric and magnetic dipoles can be tuned by the core-shell nanostructure with great freedom, and are excited simultaneously in a broadband spectrum, resulting in robust enhanced spin Hall shifts. Moreover, the coupling of the electric dipole and electric quadrupole gives rise to enhanced spin Hall shifts at both forward and backward directions. Numerical results from far-field and near-field verify the strong spin-orbit interaction of light. Our work offers a new way to exploit spin Hall effects in superresolution imaging and spin-dependent displacement sensing.
ISSN: 1094-4087
DOI: 10.1364/OE.27.004808
Rights: © 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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