Reciprocal space engineering with hyperuniform gold metasurfaces

TL;DR

This paper demonstrates how hyperuniform gold metasurfaces, designed through k-space engineering, can control light scattering and emission, revealing directional emission patterns and scaling behaviors predicted by spectral theory.

Contribution

It introduces a novel approach to designing plasmonic metasurfaces with hyperuniform geometries for tailored optical properties based on k-space design.

Findings

Directional emission patterns observed via momentum spectroscopy

Emission rings correspond to specific k-vectors

Pattern scaling matches spectral function predictions

Abstract

Hyperuniform geometries feature correlated disordered topologies which follow from a tailored k-space design. Here we study gold plasmonic hyperuniform metasurfaces and we report evidence of the effectiveness of k-space engineering on both light scattering and light emission experiments. The metasurfaces possess interesting directional emission properties which are revealed by momentum spectroscopy as diffraction and fluorescence emission rings at size-specific k-vectors. The opening of these rotational-symmetric patterns scales with the hyperuniform correlation length parameter as predicted via the spectral function method.