Third-order susceptibility of gold for ultrathin layers

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Abstract

This Letter presents an experimental study of nonlinear plasmonic effects in gold-stripe waveguides. The optical characterization is performed by a picosecond laser and reveals two nonlinear effects related to propagation of long-range surface plasmon polaritons: nonlinear power transmission of plasmonic modes and spectral broadening of plasmonic modes. The experimental values of the third-order susceptibility of the gold layers are extracted. They exhibit a clear dependence on layer thickness. (C) 2016 Optical Society of America
Original languageEnglish
JournalOptics Letters
Volume41
Issue number2
Pages (from-to)317-320
ISSN0146-9592
DOIs
Publication statusPublished - 2016

Bibliographical note

© 2016 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.

Keywords

  • OPTICS
  • SURFACE-PLASMON-POLARITON
  • SELF-PHASE MODULATION
  • WAVE-GUIDES
  • NONLINEARITY
  • FILMS

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