Nonlinear Plasmonics

Norbert Kroo, Sandor Varro, Gyz Farkas, Peter Dombi, Daniel Oszetzky, Attila Nagy, Aladar Czitrovszky

Research output: Contribution to journalArticle

12 Citations (Scopus)


Theoretical and experimental results on laser light-excited nonlinear surface plasmon (SPO) phenomena are reported. Strongly directional light emission of SPOs was indicated and observed already at relatively low cw laser power. The width of this peaked directional distribution seems to depend on the laser power. Another manifestation of nonlinearity was found by observing a weak squeezing effect in the SPO-emitted fundamental light. At high (pulsed) laser intensity an evanescent (SPO) field enhanced second harmonic emission and a broad metallic luminescent spectrum was found. The second harmonic component is spectrally broader than the fundamental SPO-emitted light. Our simple theoretical model describes all of these observations qualitatively, except for the broad luminescent spectrum.

Original languageEnglish
Pages (from-to)3203-3210
Number of pages8
JournalJournal of Modern Optics
Issue number19-20
Publication statusPublished - Nov 1 2008


  • Femtosecond phenomena
  • Surface nonlinear optics
  • Surface plasmons

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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  • Cite this

    Kroo, N., Varro, S., Farkas, G., Dombi, P., Oszetzky, D., Nagy, A., & Czitrovszky, A. (2008). Nonlinear Plasmonics. Journal of Modern Optics, 55(19-20), 3203-3210.