Optical bistability and nonlinearity of coherently coupled exciton-plasmon systems

Plexcitonics - Coupled Plasmon-exciton Systems with Tailorable Properties

Control of Coherently Coupled Exciton Polaritons in Monolayer Tungsten Disulphide.

Monolayer transition metal dichalcogenides (TMD) with confined 2D Wannier-Mott excitons are intriguing for the fundamental study of strong light-matter interactions and the exploration of exciton polaritons at high temperatures. However, the research of 2D exciton polaritons has been hindered because the polaritons in these atomically thin semiconductors discovered so far can hardly support str...

Time-resolved surface plasmon polariton coupled exciton and biexciton emission.

We discuss the coupling between optically excited semiconductor nanocrystals (NC) and thin metal films in both the single and multi-exciton regime. Using time-resolved photoluminescence spectroscopy, we determine the decay dynamics of free space and surface plasmon polariton (SPP) coupled emission. The two dynamics are found to be distinctly different at very small NC-metal separations and at p...

Strong Exciton-Plasmon Coupling in MoS2 Coupled with Plasmonic Lattice.

We demonstrate strong exciton-plasmon coupling in silver nanodisk arrays integrated with monolayer MoS2 via angle-resolved reflectance microscopy spectra of the coupled system. Strong exciton-plasmon coupling is observed with the exciton-plasmon coupling strength up to 58 meV at 77 K, which also survives at room temperature. The strong coupling involves three types of resonances: MoS2 excitons,...

Optical bistability from surface plasmon excitation through a nonlinear medium

2014 The excitation of surface plasmon by attenuated total reflection can be used to get a bistable optical device. As the incident light beam propagates through a nonlinear medium, any intensity variation tunes the plasmon excitation through resonance. Furthermore, the superposition of the incident and reflected beams induces a feedback and allows bistable operation. J. Physique 45 (1984) 597-...