Nanocavity-Enhanced Second-Harmonic Generation from Colossal Quantum Dots
Abstract
Colloidal quantum dots (QDs) are an attractive medium for nonlinear optics and deterministic heterogeneous integration with photonic devices. Their intrinsic nonlinearities can be strengthened further by coupling QDs to low mode-volume photonic nanocavities, enabling low-power, on-chip nonlinear optics. In this paper, we demonstrated cavity-enhanced second harmonic generation via integration of colossal QDs with a silicon nitride nanobeam cavity. By pumping the cavity-QD system with an ultrafast pulsed laser, we observed a strong second harmonic generation from the cavity-coupled QD, and we estimate an enhancement factor of ~3,040. Our work, coupled with previously reported deterministic positioning of colossal QDs, can enable a scalable QD-cavity platform for low-power nonlinear optics.
Cite
@article{arxiv.2503.03072,
title = {Nanocavity-Enhanced Second-Harmonic Generation from Colossal Quantum Dots},
author = {David Sharp and Abhinav Kala and Hannah Rarick and Hao A. Nguyen and Elise Skytte and Brandi M. Cossairt and Arka Majumdar},
journal= {arXiv preprint arXiv:2503.03072},
year = {2025}
}
Comments
11 pages, 3 figures