Generation of steep phase anisotropy with zero-backscattering by arrays of coupled dielectric nano-resonators
- Liquid Crystal Institute and the Department of Chemical Physics, Kent State University, Kent, Ohio 44242 (United States)
- Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
The interaction of light with high-permittivity dielectric nano-resonators can lead to zero-backscattering (i.e., full transmission), attributed to the simultaneous excitation of electric and magnetic dipolar modes in these resonators. In this paper, we numerically demonstrate that 2-dimensional Si nanocuboid arrays with anisotropic periodicity and finely tuned cuboid height can generate up to 2π optical phase anisotropy with zero-backscattering. Especially, by introducing strong Fano-type coupling into unit cells of the array, the induced phase anisotropy becomes ultra-steep with excitation wavelength. These special optical properties promise applications in various transmissive photonic devices, and we discuss their potential applications in transmissive polarization conversion and sensing.
- OSTI ID:
- 22350742
- Journal Information:
- Applied Physics Letters, Vol. 105, Issue 12; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
Parametric study of optical transmission through plasmonic hole arrays modulated by the phase transition of vanadium dioxide
Fano-like resonance emerging from magnetic and electric plasmon mode coupling in small arrays of gold particles