title: Optical stark effects in j-aggregate-metal hybrid nanostructures exhibiting a strong exciton-surface-plasmon-polariton interaction.
abstract: We report on the observation of optical Stark effects in J-aggregate-metal hybrid nanostructures exhibiting strong exciton-surface-plasmon-polariton coupling. For redshifted nonresonant excitation, pump-probe spectra show short-lived dispersive line shapes of the exciton-surface-plasmon-polariton coupled modes caused by a pump-induced Stark shift of the polariton resonances. For larger coupling strengths, the sign of the Stark shift is reversed by a transient reduction in normal mode splitting. Our studies demonstrate an approach to coherently control and largely enhance optical Stark effects in strongly coupled hybrid systems. This may be useful for applications in ultrafast all-optical switching.
authors: Institut für Physik, Carl von Ossietzky Universität, D-26111 Oldenburg, Germany and Department of Physics, Indian Institute of Technology Bombay, 400076 Mumbai, India.
authors: P
authors: P
authors: Vasa
authors: Institut für Physik, Carl von Ossietzky Universität, D-26111 Oldenburg, Germany.
authors: W
authors: W
authors: Wang
authors: Institut für Physik, Carl von Ossietzky Universität, D-26111 Oldenburg, Germany.
authors: R
authors: R
authors: Pomraenke
authors: IFN-CNR, Dipartimento di Fisica, Politecnico di Milano, 20133 Milano, Italy.
authors: M
authors: M
authors: Maiuri
authors: IFN-CNR, Dipartimento di Fisica, Politecnico di Milano, 20133 Milano, Italy.
authors: C
authors: C
authors: Manzoni
authors: IFN-CNR, Dipartimento di Fisica, Politecnico di Milano, 20133 Milano, Italy.
authors: G
authors: G
authors: Cerullo
authors: Institut für Physik, Carl von Ossietzky Universität, D-26111 Oldenburg, Germany.
authors: C
authors: C
authors: Lienau