Abstract

Periodic arrays of metallic nanocylinder combined with the luminous layer are the good platform to control the properties of photoluminescence (PL). The array structure is especially useful to directionally enhance PL from the emitters of high quantum yield, in sharp contrast to a vast majority of the plasmonic nanostructures which decrease the PL intensity from such good emitters. The trick is to use collective plasmonic mode, i.e., the radiative coupling of surface plasmon polaritons via the in-plane diffraction. In this study, we demonstrated the directional PL enhancement using the high quantum yield emitters such as Eu(III)-complex and rhodamine 6G on the periodic array of Al nanocylinders. The result is useful for designing the compact and efficient luminescence source with directional output.

© 2017 Optical Society of America