Plasmonics is promising for future electronics as it can combine optical speed of operation with nanoscale size, something which is not possible with traditional optics and electronics . Coupling of photons, plasmonic excitations and electrons is of key importance as it provides opportunities to monitor or control plasmonic nanocircuits electrically.
Spontaneous emission of a dipole can be significantly modified in metamaterials, providing opportunities to engineer
emission rates, yields, spectra, and angular patterns. To better understand specifics of such modifications for electric and
magnetic emitters, we study luminescence of Eu3+ ions placed in a close vicinity of arrays of gold nanostrips. The
luminescence is strongly polarized, with the preferable polarization parallel to the direction of strips. Polarization
patterns and angular distributions of radiation depend on wavelength, and are different for electric and magnetic dipole
transitions. The results are discussed in terms of different coupling of emitters with radiative and high-loss modes.