Mode-center Placement of Monolayer WS$_{2}$ in a Photonic Polymer Waveguide

Angelina Frank; Justin Zhou; James A. Grieve; Ivan Verzhbitskiy; José Viana-Gomes; Leyi Loh; Michael Schmid; Kenji Watanabe; Takashi Taniguchi; Goki Eda; Alexander Ling

arXiv · 2107.11523

Mode-center Placement of Monolayer WS$_{2}$ in a Photonic Polymer Waveguide

Angelina Frank·Justin Zhou·James A. Grieve·Ivan Verzhbitskiy·José Viana-Gomes·Leyi Loh·Michael Schmid·Kenji Watanabe·Takashi Taniguchi·Goki Eda·Alexander Ling

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Abstract

Effective integration of 2D materials such as monolayer transition metal dichalcogenides (TMDs) into photonic waveguides and integrated circuits is being intensely pursued due to the materials' strong exciton-based optical response. Here, we present a platform where a WS$_{2}$-hBN 2D heterostructure is directly integrated into the photonic mode-center of a novel polymer ridge waveguide. FDTD simulations and collection of photoluminescence from the guided mode indicate that this system exhibits significantly improved waveguide-emitter coupling over a previous elastomer platform. This is facilitated by the platform's enhanced refractive-index contrast and a new method for mode-center integration of the coupled TMD. The integration is based on a simple dry-transfer process that is applicable to other 2D materials, and the platform's elastomeric nature is a natural fit to explore strain-tunable hybrid-photonic devices. The demonstrated ability of coupling photoluminescence to a polymer waveguide opens up new possibilities for hybrid-photonic systems in a variety of contexts.

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Angelina Frank, Justin Zhou, James A. Grieve, Ivan Verzhbitskiy, José Viana-Gomes, Leyi Loh, Michael Schmid, Kenji Watanabe, Takashi Taniguchi, Goki Eda, Alexander Ling. 2021-07-24. Mode-center Placement of Monolayer WS$_{2}$ in a Photonic Polymer Waveguide. https://arxiv.org/abs/2107.11523

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