Compact metallo-dielectric optical antenna for ultra directional and enhanced radiative emission.
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.
Devilez
Alexis
A
Institut Fresnel, CNRS, Aix-Marseille Universite, Ecole Centrale Marseille, Domaine Universitaire de Saint Jerome, 13397 Marseille, France.
Stout
Brian
B
Bonod
Nicolas
N
D004553:Electric Conductivity; D004574:Electromagnetic Fields; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008670:Metals / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000295:instrumentation*; D010316:Particle Size; D010783:Photometry / Q000295:instrumentation*; D014159:Transducers
D008670:Metals