Photonic integrated circuits are an enabling technology in modern communications systems. The continually increasing demands for higher-speed and lower operating power devices have resulted in the continued impetus to shrink photonic components. In this work, we demonstrate a primitive nanophotonic integrated circuit element composed of a single silver nanowire and single-layer molybdenum disulfide (MoS2) flake. We show that nanowire plasmons can excite MoS2 photoluminescence via direct plasmon-to-exciton conversion along the wire and plasmon-to-photon-to-exciton conversion at the MoS2-covered wire end. We also find that the reverse process is possible: MoS2 excitons can decay into nanowire plasmons that can then be routed via the nanowire on-chip. Finally, we demonstrate that the nanowire may serve the dual purpose of both exciting MoS2 photoluminescence via plasmons and recollecting the decaying excitons.
@article{arxiv.1404.1853,
title = {Integrated nanophotonics based on wire plasmons and atomically-thin material},
author = {Kenneth M. Goodfellow and Ryan Beams and Chitraleema Chakraborty and Lukas Novotny and A. Nick Vamivakas},
journal= {arXiv preprint arXiv:1404.1853},
year = {2014}
}
Comments
12 pages, 4 figures, plus supplementary information