Coherence effects in the backward-scattering direction, such as enhanced backscattering (EBS) and the appearance of a negative polarization branch (NPB), are investigated for a simple scattering system composed of two dipolelike particles separated by a fixed distance. The influence on these effects of coupling resonances between the particles is analyzed. The appearance of these coherent phenomena (EBS and NPB) and their relationship as a function of the optical properties of the particles (polarizability) and particle separation are also studied.
© 2005 Optical Society of America
(030.1670) Coherence and statistical optics : Coherent optical effects
(030.4070) Coherence and statistical optics : Modes
(260.5740) Physical optics : Resonance
(290.4210) Scattering : Multiple scattering
(290.5870) Scattering : Scattering, Rayleigh
F. Moreno, O. Merchiers, and F. González, "Coherence effects in scattering systems of two interacting dipoles at resonance," Opt. Lett. 30, 2194-2196 (2005)