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    collective electron oscillations tagged posts

    Team Manages to Dynamically Control Trions with a Waveguide

    May 17, 2023, Categories  Physics, Technology/Electronics

    Fig. 1
     Illustration of propagating SPP and exciton-to-trion conversion with dynamic optical modulation. a Schematic diagram of all-optical trion control platform operating with adaptive optical excitation. Green dashed line indicates transferred MoS2 ML. b Illustration of all-optical trion control platform facilitated by nanoscale strain gradient, plasmon-induced hot electrons, and resultant exciton-to-trion conversion. c Illustration of hot electron injection process from Au to MoS2 ML in SPP mode. d Strain (ϵ) and corresponding bandgap energy change (ΔE) diagram of MoS2 ML as function of distance x, where gray region indicates nanogap area. e Adaptive wavefront shaping using stepwise sequence feedback algorithm to find optimal phase mask (left) and dynamic excitonic emission modulation thro...
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