Aluminum Nanoantenna Complexes for Strong Coupling between Excitons and Localized Surface Plasmons

作者：Eizner Elad; Avayu Ori; Ditcovski Ran; Ellenbogen Tal

来源：Nano Letters, 2015, 15(9): 6215-6221.

DOI：10.1021/acs.nanolett.5b02584

• Strong coupling
• aluminum nanoantennas
• organic polaritons
• localized surface plasmons

We study the optical dynamics in complexes of aluminum nanoantennas coated with molecular J-aggregates and find that they provide an excellent platform for the formation of hybrid exciton-localized surface plasmons. Giant Rabi splitting of 0.4 eV, which corresponds to similar to 10 fs energy transfer cycle, is observed in spectral transmittance. We show that the nanoantennas can be used to manipulate the polarization of hybrid states and to confine their mode volumes. In addition, we observe enhancement of the photoluminescence due to enhanced absorption and increase in the local density of states at the exciton-localized surface plasmon energies. With recent emerging technological applications based on strongly coupled light-matter states, this study opens new possibilities to explore and utilize the unique properties of hybrid states over all of the visible region down to ultraviolet frequencies in nanoscale, technologically compatible, integrated platforms based on aluminum.

• 出版日期2015-9