Experimental evidence of guided resonances in photonic crystals with aperiodically-ordered supercells

TL;DR

This paper provides the first experimental demonstration of guided resonances in photonic crystal slabs with aperiodically-ordered supercells, using Ammann-Beenker tiling to explore near-infrared optical properties.

Contribution

It introduces the experimental realization and analysis of guided resonances in aperiodic photonic structures, expanding the understanding of resonance control via quasiperiodic geometries.

Findings

Good agreement between measurements and simulations

Guided resonances observed in aperiodic supercells

Potential for new resonance engineering strategies

Abstract

We report on the first experimental evidence of guided resonances (GRs) in photonic crystal slabs based on aperiodically-ordered supercells. Using the Ammann-Beenker (quasiperiodic, 8-fold symmetric) tiling geometry, we present our study on the fabrication, experimental characterization, and full-wave numerical simulation of two representative structures (with different filling parameters) operating at near-infrared wavelengths (1300-1600 nm). Our results show a fairly good agreement between measurements and numerical predictions, and pave the way for the development of new strategies (based, e.g., on the lattice symmetry breaking) for GR engineering.