Angle-resolved reflection and emission spectra of metal gratings consisting of subwavelength grooves and immersed into rhodamine B and rhodamine 19 solutions are presented. The measured reflection and emission dispersion diagrams reveal the surface plasmon polaritons positions and strong plasmon-mediated emission enhancement, respectively. The same grating could be easily reused for the charact...

The transition dipole moment of organic dyes PM546 and rhodamine 123 is calculated from fluorescence lifetime measurements in solutions of different refractive index. A model proposed by Toptygin et al (2002 J. Phys. Chem. B 106 3724-34) provides a relationship between the radiative rate constant and refractive index of the solvent, and allows the electronic transition dipole moments to be foun...