2010/03/25 by Devilez, Alexis, Bonod, Nicolas, Stout, Brian · 1 citation
#FOS: Physical sciences #Optics (physics.optics)
paper · doi:10.48550/arxiv.1003.4880
We report the design of highly efficient optical antennas employing a judicious synthesis of metallic and dielectric materials. In the proposed scheme, a pair of metallic coupled nanoparticles permits large enhancements in both excitation strength and radiative decay rates, while a high refractive index dielectric microsphere is employed to efficiently collect light without spoiling the emitter quantum efficiency. Our simulations indicate potential fluorescence rate enhancements of 3 orders of magnitude over the entire optical frequency range.