Enhanced localized fluorescence in plasmonic nanoantennae

Author

• Reuben Bakker, Purdue University - Main CampusFollow
• Hsiao-Kuan Yuan, Purdue University - Main CampusFollow
• Zhengtong Liu, Purdue UniversityFollow
• V. P. Drachev, Birck Nanotechnology Center, School of Electrical and Computer Engineering, Purdue UniversityFollow
• Alexander V. Kildishev, Birck Nanotechnology Center, Purdue UniversityFollow
• V. M. Shalaev, Birck Nanotechnology Center and School of Electrical and Computer Engineering, Purdue UniversityFollow
• Rasmus H. Pedersen, Tech Univ Denmark
• Samuel Gresillon, Univ Paris 06, CNRS, LPEM, UPRA5
• Alexandra Boltasseva, Birck Nanotechnology Center, Purdue UniversityFollow

Abstract

Pairs of gold elliptical nanoparticles form antennae, resonant in the visible. A dye, embedded in a dielectric host, coats the antennae; its emission excites plasmon resonances in the antennae and is enhanced. Far-field excitation of the dye-nanoantenna system shows a wavelength-dependent increase in fluorescence that reaches 100 times enhancement. Near-field excitation shows enhanced fluorescence from a single nanoantenna localized in a subwavelength area of similar to 0.15 mu m(2). The polarization of enhanced emission is along the main antenna axis. These observed experimental results are important for increasing light extraction from emitters localized around antennae and for potential development of a subwavelength sized laser.

Citation

APPLIED PHYSICS LETTERS 92, 043101

Date of this Version

January 2008

Recommended Citation

Bakker, Reuben; Yuan, Hsiao-Kuan; Liu, Zhengtong; Drachev, V. P.; Kildishev, Alexander V.; Shalaev, V. M.; Pedersen, Rasmus H.; Gresillon, Samuel; and Boltasseva, Alexandra, "Enhanced localized fluorescence in plasmonic nanoantennae" (2008). Birck and NCN Publications. Paper 214.
https://docs.lib.purdue.edu/nanopub/214