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20 August 2020 Coupled emitters in atomically thin lateral heterostructures
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Localized emitters in atomically thin 2D materials and lateral heterostructures are of interest for flexible optoelectronic and nanoscale quantum applications. We investigate near-field photoluminescence (PL) and Raman signals of local heterogeneities such as nanobubbles, lateral heterostructures and alloys in monolayer and few-layer transition metal dichalcogenides coupled via polariton-like surface waves and plasmon-enhanced hot electrons. We investigate various emitter coupling schemes and near-field enhancement mechanisms and demonstrate near-field imaging of exciton funnels, revealing a strong synergistic enhancement of the PL signals due to the plasmonic antenna tip, hot electron injection, and exciton funnelling. This opens new avenues in exploration of novel nanophotonic coupling schemes.
Conference Presentation
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Dmitri V. Voronine and Sharad Ambardar "Coupled emitters in atomically thin lateral heterostructures", Proc. SPIE 11461, Active Photonic Platforms XII, 114611F (20 August 2020);

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