title: Dual Strong Couplings Between TPPS J-Aggregates and Aluminum Plasmonic States.
abstract: We report on the spectral properties of strong coupling between the localized surface plasmon resonances (LSPRs) of aluminum (Al) nanostructures and tetraphenylporphyrin tetrasulfonic acid hydrate (TPPS) J-aggregates. Because of their wide spectral range of LSPR bands from ultraviolet to near-infrared wavelengths by controlling structural size, Al nanodisks can realize strong coupling with different excitons of TPPS J-aggregates. The Rabi splitting energies of the excitons based on Soret and Q bands are 300 and 180 meV, respectively. In addition to extinction spectrum, we have also measured an excitation spectrum to determine the essential absorption of the hybrid states and successfully confirmed a shoulder peak corresponding to a lower branch of hybrid states. In Al nanorod systems, strong coupling with two excitons can also be selectively induced by merely rotating the polarization of the incident light, which constituted a simple platform for the dynamic control of exciton/plasmon coupling states.
authors.affiliation: Research Institute for Electronic Science, Hokkaido University , Sapporo 001-0021, Japan.
authors.forename: Jie
authors.initials: J
authors.lastname: Li
authors.affiliation: Research Institute for Electronic Science, Hokkaido University , Sapporo 001-0021, Japan.
authors.forename: Kosei
authors.initials: K
authors.lastname: Ueno
authors.affiliation: Research Institute for Electronic Science, Hokkaido University , Sapporo 001-0021, Japan.
authors.forename: Hiyori
authors.initials: H
authors.lastname: Uehara
authors.affiliation: Research Institute for Electronic Science, Hokkaido University , Sapporo 001-0021, Japan.
authors.forename: Jingchun
authors.initials: J
authors.lastname: Guo
authors.affiliation: Research Institute for Electronic Science, Hokkaido University , Sapporo 001-0021, Japan.
authors.forename: Tomoya
authors.initials: T
authors.lastname: Oshikiri
authors.affiliation: Research Institute for Electronic Science, Hokkaido University , Sapporo 001-0021, Japan.|Department of Applied Chemistry & Institute of Molecular Science, National Chiao Tung University , Hsinchu 30010, Taiwan.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Misawa