Frequency conversion of propagating surface plasmon polaritons by organic molecules

T. K. Hakala, J. J. Toppari, M. Pettersson, A. Kuzyk, H. Tikkanen, H. Kunttu, P. Törmä

Research output: Contribution to journalArticleScientificpeer-review

10 Citations (Scopus)
414 Downloads (Pure)

Abstract

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.

Original languageEnglish
Article number123307
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume93
Issue number12
DOIs
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed

Keywords

  • dyes
  • integrated optics
  • optical frequency conversion
  • optical saturable absorption
  • optical waveguides
  • polaritons
  • surface plasmons

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