2016/06/20 by András Szenes, Szenes, Andras, Balázs Bánhelyi +9
Engineering · Materials Science · #Diamond and Carbon-based Materials Research #FOS: Physical sciences #Gold and Silver Nanoparticles Synthesis and Applications #Nonlinear Optical Materials Studies #Optics (physics.optics)
paper · pdf · doi:10.48550/arxiv.1606.06278
openalex publication_date 2016/06/20 · openalex created_date 2022/10/04 · openalex updated_date 2026/07/28
A novel numerical methodology has been developed, which makes possible to\noptimize arbitrary emitting dipole and plasmonic nano-resonator configuration\nwith an arbitrary objective function. By selecting quantum efficiency as the\nobjective function that has to be maximized at preselected Purcell factor\ncriteria, optimization of plasmonic nanorod based configurations has been\nrealized to enhance fluorescence of NV and SiV color centers in diamond. Gold\nand silver nanorod based configurations have been optimized to enhance\nexcitation and emission separately, as well as both processes simultaneously,\nand the underlying nanophotonical phenomena have been inspected comparatively.\nIt has been shown that considerable excitation enhancement is achieved by\nsilver nanorods, while nanorods made of both metals are appropriate to enhance\nemission. More significant improvement can be achieved via silver nanorods at\nboth wavelengths of both color centers. It has been proven that theoretical\nlimits originating from metal dielectric properties can be approached by\nsimultaneous optimization, which results in configurations determined by\npreferences corresponding to the emission. Larger emission enhancement is\nachieved via both metals in case of SiV center compared to the NV center. Gold\nand silver nanorod based configurations making possible to improve SiV centers\nquantum efficiency by factors of 1.18 and 5.25 are proposed, which have\npotential applications in quantum information processing.\n