We demonstrate that an array of optical antennas may render a thin layer of randomly oriented semiconductor nanocrystals into an enhanced and highly directional source of polarized light. The array sustains collective plasmonic lattice resonances, which are in spectral overlap with the emission of the nanocrystals over narrow angular regions. Consequently, different photon energies of visible light are enhanced and beamed into definite directions.

Appl. Phys. Lett.

Rodriguez, S., Lozano, G., Verschuuren, M., Gomes, R., Lambert, K., de Geyter, B., … Gómez Rivas, J. (2012). Quantum rod emission coupled to plasmonic lattice resonances: A collective directional source of polarized light. Appl. Phys. Lett., 100(11, Article number: 111103), 1–3. doi:10.1063/1.3693397