Enhanced Purcell factor for nanoantennas supporting interfering resonances
Optics
2022-06-09 v3
Abstract
We study the effect of coupled resonances and quasi-bound states in the continuum (quasi-BICs) on the Purcell factor in dielectric resonant nanoantennas. We analyze numerically interfering resonances in a nanodisk with and without a substrate when the modes are coupled to an emitter localized inside the nanodisk, and we quantify the modal contributions to the Purcell factor also reconstructing the radiation patterns of the resonant system. It is revealed that the Purcell effect can be boosted substantially for a strong coupling of resonances in the quasi-BIC regime.
Keywords
Cite
@article{arxiv.2111.03339,
title = {Enhanced Purcell factor for nanoantennas supporting interfering resonances},
author = {Rémi Colom and Felix Binkowski and Fridtjof Betz and Yuri Kivshar and Sven Burger},
journal= {arXiv preprint arXiv:2111.03339},
year = {2022}
}