High quality-factor fano metasurface comprising a single resonator unit cell

DWPI Title: Fano metasurface used in optical device has periodic two-dimensional array of single-resonator unit cells on dielectric substrate
Abstract: A new monolithic resonator metasurface design achieves ultra-high Q-factors while using only one resonator per unit cell. The metasurface relies on breaking the symmetry of otherwise highly symmetric resonators to induce intra-resonator mixing of bright and dark modes (rather than inter-resonator couplings), and is scalable from the near-infrared to radio frequencies and can be easily implemented in dielectric materials. The resulting high-quality-factor Fano metasurface can be used in many sensing, spectral filtering, and modulation applications.
Use: Fano metasurface used in optical device. Uses include but are not limited to laser, photodetector, modulator, nonlinear frequency converter, sensor.
Advantage: Provides a robust, high quality-factor Fano resonances in the metasurface transmission and reflection spectra while reducing overall size of the array by using a single resonator per unit cell.
Novelty: The Fano metasurface has a periodic two-dimensional array of single-resonator unit cells on a dielectric substrate. Each resonator has an electric or magnetic dipole moment in the plane of substrate that couples to normally incident light and at least one out-of-plane electric or magnetic dipole moment that couples in near-field to in-plane electric or magnetic dipole moment. The out-of-plane electric or magnetic dipole moment provides a narrow spectral resonance within a broad spectral resonance provided by in-plane electric or magnetic dipole moment.
Filed: 8/3/2016
Application Number: US15227440A
Tech ID: SD 13511.1
This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.
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