Chinese Optics Letters, 2016, 14 (1): 011601, Published Online: Aug. 6, 2018
Tailoring magnetic and electric resonances with dielectric nanocubes for broadband and high-efficiency unidirectional scattering Download: 995次
Abstract
The interference of optically induced electric and magnetic resonances in high-refractive-index dielectric nanoparticles provides a new approach to control and shape the scattering patterns of light in the field of nanophotonics. In this Letter, we spectrally tune the electric and magnetic resonances by varying the geometry of a single isolated lead telluride (PbTe) dielectric nanocube. Then, we overlap the electric dipole resonance and magnetic dipole resonance to suppress backward scattering and enhance forward scattering in the resonance region. Furthermore, a broadband unidirectional scattering is achieved by structuring the dielectric nanocuboids as a trimer antenna.
Yong Wang, Xianghao Zeng, Erchan Yang, Yonghua Lu, Douguo Zhang, Pei Wang. Tailoring magnetic and electric resonances with dielectric nanocubes for broadband and high-efficiency unidirectional scattering[J]. Chinese Optics Letters, 2016, 14(1): 011601.