Abstract
The dielectric metasurfaces supporting non-radiative toroidal dipole resonances play important roles in nanophotonics. In this paper, toroidal dipole resonances using a double-axe nanostructure array in the near-infrared region are theoretically investigated by the characterization of the near-field distribution and far-field scattering. An experimental quality factor of 261 is obtained at the resonant wavelength of 1498 nm.
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