Publications [#269556] of David R. Smith

Papers Published
  1. Akselrod, GM; Ming, T; Argyropoulos, C; Hoang, TB; Lin, Y; Ling, X; Smith, DR; Kong, J; Mikkelsen, MH, Leveraging Nanocavity Harmonics for Control of Optical Processes in 2D Semiconductors., Nano Letters, vol. 15 no. 5 (May, 2015), pp. 3578-3584 [doi] .

    Optical cavities with multiple tunable resonances have the potential to provide unique electromagnetic environments at two or more distinct wavelengths--critical for control of optical processes such as nonlinear generation, entangled photon generation, or photoluminescence (PL) enhancement. Here, we show a plasmonic nanocavity based on a nanopatch antenna design that has two tunable resonant modes in the visible spectrum separated by 350 nm and with line widths of ∼60 nm. The importance of utilizing two resonances simultaneously is demonstrated by integrating monolayer MoS2, a two-dimensional semiconductor, into the colloidally synthesized nanocavities. We observe a 2000-fold enhancement in the PL intensity of MoS2--which has intrinsically low absorption and small quantum yield--at room temperature, enabled by the combination of tailored absorption enhancement at the first harmonic and PL quantum-yield enhancement at the fundamental resonance.