Argyropoulos, ChristosChen, Pai-YenD’Aguanno, GiuseppeEngheta, NaderAlù, Andrea2020-05-212020-05-212012-01-27Argyropoulos, Christos; et al.; Boosting optical nonlinearities in ε -near-zero plasmonic channels; Physical Review B 85, 045129 (2012); https://journals.aps.org/prb/abstract/10.1103/PhysRevB.85.045129http://dx.doi.org/10.1103/PhysRevB.85.045129http://hdl.handle.net/11603/18695The 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-Perot resonant gratings.5 pagesen-USThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.©2012 American Physical SocietyText