Optical Stark Effects in-Aggregate–Metal Hybrid Nanostructures Exhibiting a Strong Exciton–Surface-Plasmon-Polariton Interaction
- 21 January 2015
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 114 (3), 036802
- https://doi.org/10.1103/physrevlett.114.036802
Abstract
We report on the observation of optical Stark effects in -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.
Keywords
Funding Information
- Deutsche Forschungsgemeinschaft
- European Community (280879-2)
- Laserlab Europe II (228334)
- Korea Foundation for International Cooperation of Science and Technology
- Global Research Laboratory project (K20815000003)
- European Community under Graphene Flagship (CNECT-ICT-604391)
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