Optical stark effects in j-aggregate-metal hybrid nanostructures exhibiting a strong exciton-surface-plasmon-polariton interaction

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 co...

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Bibliographic Details
Published in:Physical review letters 2015-01, Vol.114 (3), p.036802, Article 036802
Main Authors: Vasa, P, Wang, W, Pomraenke, R, Maiuri, M, Manzoni, C, Cerullo, G, Lienau, C
Format: Article
Language:English
Subjects:
Coupled modes
Excitation
Excitation spectra
Joining
Line shape
Nanostructure
Stark effect
Switching
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Summary: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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.114.036802