Departmental Papers (ESE)


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.

Document Type

Journal Article

Date of this Version



Argyropoulos, C., Chen, P., D'Aguanno, G., Engheta, N., & Alù, A. (2012). Boosting optical nonlinearities in ε-near-zero plasmonic channels. Physical Review B, 85(4), 045129. doi: 10.1103/PhysRevB.85.045129

©2012 American Physical Society



Date Posted: 28 March 2012

This document has been peer reviewed.