Boosting optical nonlinearities in ε-near-zero plasmonic channels

Christos Argyropoulos, Pai Yen Chen, Giuseppe D'Aguanno, Nader Engheta, Andrea Alù

Research output: Contribution to journalArticlepeer-review

207 Scopus citations


The anomalous transmission properties of zero-permittivity ultranarrow channels are used to boost Kerr nonlinearities and achieve switching and bistable response for moderate optical intensities. Strong field enhancement, uniform all along the channel, is a typical feature of ε-near-zero supercoupling and is shown to be particularly suited to enhance nonlinear effects. This is obtained by designing narrow apertures at cutoff in a plasmonic screen. We show that this nonlinear mechanism can significantly outperform nonlinearities in traditional Fabry-Pérot resonant gratings.

Original languageEnglish (US)
Article number045129
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number4
StatePublished - Jan 27 2012

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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