We study the dipole–dipole coupling between two fluorescent molecules in the presence of a chain of metallic nanoparticles. We analyze the spectral behavior of the coupling strength and its dependence on the molecular orientation. Our results show that for certain resonant wavelengths the coupling strength between the molecules is greatly enhanced and is strongly polarization sensitive. We also demonstrate how metallic nanoparticles can be utilized in implementing a polarization-sensitive coupler.
© 2007 Optical Society of America
Original Manuscript: May 15, 2007
Manuscript Accepted: August 11, 2007
Published: October 3, 2007
J. Lindberg, K. Lindfors, T. Setälä, and M. Kaivola, "Dipole-dipole interaction between molecules mediated by a chain of silver nanoparticles," J. Opt. Soc. Am. A 24, 3427-3431 (2007)