Title :
Photoluminescence Enhancement Dependent on the Orientations of Single NV Centers in Nanodiamonds on a Gold Film
Author :
Gengxu Chen ; Yan Liu ; Min Song ; Botao Wu ; Wu, E. ; Heping Zeng
Author_Institution :
State Key Lab. of Precision Spectrosc., East China Normal Univ., Shanghai, China
Abstract :
We studied the orientations of single Nitrogen-Vacancy (NV) color centers in nanodiamonds on a gold film by defocused imaging with a scanning confocal microscopy system and an electron-multiplying charge-coupled device. It was demonstrated that the perpendicular oriented dipole of single NV color center showed shorter fluorescence lifetime and higher fluorescence intensity than any other oriented ones on account of higher coupling efficiency of local electronic field induced by the surface plasmon resonance on the gold film for a vertical transition dipole.
Keywords :
gold; nanophotonics; nanostructured materials; photoluminescence; surface plasmon resonance; electron-multiplying charge-coupled device; electronic field; gold film; nanodiamonds; photoluminescence enhancement; scanning confocal microscopy system; shorter fluorescence lifetime; single nitrogen-vacancy color centers; surface plasmon resonance; vertical transition dipole; Films; Fluorescence; Gold; Image color analysis; Photoluminescence; Photonics; Plasmons; Diamond; gold; image orientation analysis; photoluminescence; plasmons;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2013.2247977
