Single Emitter Fluorescence Enhancement with Surface Lattice Resonances
The Journal of Physical Chemistry C
Surface lattice resonances (SLRs) are high quality factor resonances arising in periodic arrays of nanoantennas that offer unique opportunities to enhance light–matter interactions. SLRs have been successfully used to enhance nonlinear signals, magneto-optical effects, and also the fluorescence signal from quantum emitters. However, the high potential of SLRs to tailor light emission of single photon sources is still unexplored. In this study, we report numerical investigations of light emission from a single emitter coupled to SLRs. We demonstrate that the excitation of SLRs with an impinging plane wave allows for the enhancement of the local field intensity by several orders of magnitude, much higher than what can be achieved with localized resonances. We also study the alteration of the decay rate of the emitter (Purcell effect) inside the array, evidencing an emission enhancement similar to the one of the localized resonance of a single antenna. Finally, we plot the far-field radiation patterns of the arrays and show that they are controlled by the period of the arrays and the emission wavelength, enabling photon sorting with the emission angle. Altogether, our study demonstrates a new route to design high-brightness sources based on single emitters.