Bloch Surface Wave-Coupled Emission at Ultra-Violet Wavelengths.

ABSTRACT: The interaction of fluorophores with nearby metallic structures is now an active area of research. Dielectric photonic structures offer some advantages over plasmonic structures, namely small energy losses and less quenching. We describe a dielectric one-dimensional photonic crystal (1DPC), which supports Bloch surface waves (BSWs) from 280 to 440 nm. This BSW structure is a quartz slide coated with alternating layers of SiO₂ and Si₃N₄. We show that this structure displays BSWs and that the near-UV fluorophore, 2-aminopurine (2-AP), on the top surface of the structure couples with the BSWs. Fluorophores do not have to be inside the structure for coupling and show a narrow angular distribution, with an angular separation of wavelengths. The Bloch wave-couple

SUBMITTER: Badugu R 

PROVIDER: S-EPMC5512112 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature