We propose a robust photonic platform for encapsulation and addressing of optically active 2D- and nano-materials. Our implementation utilises a monolayer of MoS2 transition metal dichalcogenide embedded in an elastomeric waveguide chip. The structure is manufactured from PDMS using soft-lithography and capable of sustaining a single mode of guided light. We prove that this setup facilitates addressing of the 2D material flake by pumping it with polarised laser light and gathering polarisation-resolved photoluminescence spectra with the extinction ratio of 31, which highlights the potential for selection-rule dependent measurements. Our results demonstrate improved handling of the material and experimental simplification compared to other techniques. Furthermore, inherent elasticity of the host provides an avenue for direct mechanical coupling to embedded materials.
@article{arxiv.1810.05342,
title = {Elastomeric waveguide on-chip coupling of an encapsulated MoS$_2$ monolayer},
author = {Filip Auksztol and Daniele Vella and Ivan Verzhbitskiy and Kian Fong Ng and Yi Wei Ho and James A Grieve and José Viana-Gomes and Goki Eda and Alexander Ling},
journal= {arXiv preprint arXiv:1810.05342},
year = {2019}
}
Comments
Accepted to ACS Photonics with DOI 10.1021/acsphotonics.8b01493