Frequency conversion of propagating surface plasmon polaritons by organic molecules

We demonstrate frequency conversion of surface plasmon polaritons (SPP) by utilizing the coupling between organic dye molecules and SPP. Launching of SPPs into a plasmonic waveguide is done in two ways: by optically excited molecules and by quantum dots (QDs). QDs are demonstrated to overcome the ma...

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Bibliographic Details
Published in:Applied physics letters 2008-09, Vol.93 (12)
Main Authors: Hakala, T. K., Toppari, J. J., Pettersson, M., Kuzyk, A., Tikkanen, H., Kunttu, H., Törmä, P.
Format: Article
Language:English
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Summary:We demonstrate frequency conversion of surface plasmon polaritons (SPP) by utilizing the coupling between organic dye molecules and SPP. Launching of SPPs into a plasmonic waveguide is done in two ways: by optically excited molecules and by quantum dots (QDs). QDs are demonstrated to overcome the major problem of bleaching occurring with molecules. The SPP propagates tens of micrometers and clear frequency conversion is observed in the SPP spectrum after passing an area of converter molecules. The use of molecules and QDs as elements of all-plasmonic devices has the potential for high integration and use of self-assembly in fabrication.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2987726