Anapole-assisted absorption engineering in arrays of coupled amorphous GaP nanodisks

Broadband solar light harvesting plays a crucial role for efficient energy conversion. Anapole excitations and associated absorption engineering in dielectric nanoresonators are a focus of nanophotonic research due to the intricate combination of non-radiating modes and strong electromagnetic field confinement in the underlying materials [1] . The resulting high field strengths are therefore ideally suited for enhanced second harmonic generation [2] and photocatalysis [3] , where devices require large areas with closely spaced nanoresonators for sizable photonic yields. However, most anapole studies have so far been carried out on the single particle level, neglecting the influence of anapole-anapole interactions.